Green’s Dictionary of Slang

gun n.5

[abbr. gonnof n.; note Sutherland, The Professional Thief (1936): ‘The term “cannon” is used to designate the pickpocket and also the racket of picking pockets. The theory of the origin of this term is that the pickpocket some centuries ago was called a gonnif, which is the Jewish word for thief. This term was then abbreviated to “gun”; later someone in a moment of smartness referred to a pickpocket as a “cannon” to designate a big gun, and the term “cannon” then became general. The term “gun” is still used to refer to pickpockets, and the female pickpocket who operates upon men is called a “gun-moll”.’]

1. a fool, a bungler.

[UK]Hotten Dict. of Modern Sl. etc. (2nd edn).
[UK]Hotten Sl. Dict.

2. a thief.

[UK]‘Ducange Anglicus’ Vulgar Tongue.
[UK]A. Mayhew Paved with Gold 70: Shut up, will you – shut up, now! I tell you, you ain’t a-going to make a gun (thief) of this here young flat.
[UK]Leaves from Diary of Celebrated Burglar 5/1: One of the ‘guns’ [...] had brought his ‘moll’ with him to show her off before the ‘meet’.
[US]Memphis Dly Appeal (TN) 12 Mar. 3/3: A skillful thief is styled a ‘gun’.
[UK]Hotten Sl. Dict.
[Aus]Bulletin (Sydney) 31 July 17/4: [He] would often ‘bash up to a bug,’ assisted by one or two other ‘guns,’ turn him over and take the money.
[UK]J.W. Horsley Jottings from Jail 31: Sheffield for pitchers of snyde (coiners and utterers), signed by Darkey, the gun (or gonoph, i.e., thief), from Wandsworth Road, for a bust.
[UK]P.H. Emerson Signor Lippo 87: If the rozzers were to see him in bona clobber they’d take him for a gun.
[UK]A. Morrison Tales of Mean Streets (1983) 149: Circumstances had always been against Scuddy Lond, the gun. The word gun, it may be explained, is a friendly synonym for thief.
[Aus]Truth (Sydney) 9 Dec. 6/4: When S. saw D [...] cramming his winnings into his pockets [...] he tumbled that he was a copper-fastened flat. Of such are the kingdom of tear-downs and compared to which the ordinary gun is only an amateur.
[US]F. Hutcheson Barkeep Stories 77: ‘What about this charge the officers make. That you’re always in company with thieves?’ ‘No, sir! Dat’s a lie! I never be wit’ any o’ dem guns at all!’.
[Aus]Sydney Sportsman (Surry Hills, NSW) 21 Aug. 4/1: Daily the garrotter and gun grow bolder [and] our police force [...] cannot cope with the ever-present obtrusive system of outrage and robbery.
[US]H. Hapgood Types From City Streets 317: I’m too good a gun to do any sure-thing work.
[Aus]Sun. Times (Perth) 5 June 2nd sect. 13/4: A mob of Eastern crooks landed in the State [...] accompanied by a number of ‘guns’ who have passed through the hands of the police on several occasions.
[US]J. Lait ‘One Touch of Art’ in Beef, Iron and Wine (1917) 209: ‘You’re no burglar—you’re a bungler.’ ‘Well, [...] nobody ever showed me. I’m a self-made gun.’.
[US]D. Hammett ‘The Second-Story Angel’ in Nightmare Town (2001) 221: I had to dodge half the guns in the burg for fear they’d put the finger on me.
[US]G. Milburn ‘They Can’t Do That’ in Hobo’s Hornbook 233: When you’ve just been framed by an upright judge / For a ten year jolt or so / For a job that was done by another gun, / And you weren’t in on the dough.
[US]D. Maurer Big Con 202: All Irish con men [...] go to church the same as guns.
[US]Goldin et al. DAUL 88/1: Gun, n. [...] 2. Any thief, especially a pickpocket.
[US]Ragen & Finston World’s Toughest Prison 802: gun – A crook; gunman or thief.

3. a pickpocket, also attrib (see cite 1918).

[UK]Hotten Dict. of Modern Sl. etc. 46: gun, a thief, an amateur pickpocket.
[UK]Leaves from Diary of Celebrated Burglar 43/2: Having seen how easy the ‘guns’ made their ‘tin,’ he wished to ‘pal in’ with a ‘mob’.
[US]Nat. Police Gaz. (NY) 7 Sept. n.p.: Dan Noble [...] sloped to England some time ago with several ‘centuries’ belonging to ‘guns,’ got on the ‘graft’ [and] first made his appearance [...] on the ‘dip’.
[UK]Manchester Eve. News 16 Oct. 4/1: His old woman is doing time for taking in some two or three hundred watches from the ‘guns’.
[UK]M. Davitt Leaves from a Prison Diary I 106: Hooks — These individuals, who are also known as ‘gunns’ and ‘buzzers,’ in prison slang, constitute the pickpocket class in its various specialities.
[UK]F.W. Carew Autobiog. of a Gipsey 412: Capting Beresford’s his name and a tip-top gun he is – most in general works the South Coast lines on the mag.
[Aus]Truth (Sydney) 21 Apr. 5/3: Jones informed me that he was a ‘gun’ and also that Mrs Seymour’s house was a rendezvous for Melbourne thives.
[Aus]Sydney Sportsman (Surry Hills, NSW) 6 July 3/5: When poor Outback comes to Sydney, / Just to see the swarmin’ town, / The guns are trained upon him / And they pouch his every brown.
[US]Number 1500 Life In Sing Sing 260: The gun had just lifted his mitt when the conny fell to the graft and tipped the sucker to the lay.
[US]A. Berkman Prison Memoirs of an Anarchist (1926) 198: A real good gun’s always got his fall money planted, – I mean some ready coin in case of trouble.
[Aus]Sport (Adelaide) 15 May 2/1: There were pickpockets and guns galore at Morphettville, but some of these gentry are reputed squirt carriers.
Jackson Dly News (MS) 1 Apr. 7/3: Crook Chatter [...] ‘It is imperative that we “dicks” master the “gun talk”’.
[US]C. Sandburg ‘Cahoots’ in Smoke and Steel 45: Ain’t it fifty-fifty all down the line, / Petemen, dips, boosters, stick-ups and guns—what’s to hinder?
[US]‘Boxcar Bertha’ Sister of the Road (1975) 307: pickpockets, cannons, whizzes or guns. There are many professional and amateur pickpockets who work the road.
[US]C. Rawson Headless Lady (1987) 46: Dip is a winchell [...] A sucker word [...] Gun, from the Jewish gonnif, meaning thief, is preferable, or even the more recent variant, cannon.
[US]Monteleone Criminal Sl. (rev. edn).
[US] ‘Burglar Cops’ in C. Hamilton Men of the Und. 116: The guns had been tearing open the [street] cars so hard.
[US]B. Jackson Get Your Ass in the Water (1974) 85: That’s the worst old place in ragtown for a shuckman or gun.

4. (Aus.) a confidence trickster.

[Aus]Bulletin (Sydney) 17 Feb. 18/3: The publican [...] winked at the spieler, and then bought four purses in succession; simulating great delight as he inspected the contents. This ‘buttoning’ gave the crowd a start, and the Sydney ‘gun’ did well for a while.
[Aus]Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 77: GUN: thieves a thief, more particularly a well dressed thief or spieler.
[UK]A. Wright Rung In (1931) 260: They are both rich men and as pretty a pair of ‘guns’ as ever prospered on the gullibility of the sporting public.
[US]J. Callahan Man’s Grim Justice 195: Just wait until she gets hep that you’re a ‘gun.’.

In compounds

gun hat (n.)

(Aus. Und.) a soft felt hat.

[Aus](con. late 1880s) Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 37: In the late ’Eighties the fashion with the larrikin was a ‘gun’ / literally thief / hat, also soft felt, but of smaller crown and brim [i.e. than the higher ‘Yankee hat’].
gun joint (n.)

(US Und.) a saloon or bar frequented by pickpockets.

[US]Dly Press (Newport News, VA) 19 Apr. 12/14: Every big city has its saloons which are known [...] as ‘gun-joints’.
gun-maker (n.)

(US Und.) an older thief who instructs young criminals, esp. pickpockets.

[US]Number 1500 Life In Sing Sing 255: Gun-Maker. A Fagin; instructor of young thieves.
[US]Monteleone Criminal Sl. (rev. edn).
gun mob (n.)

(US Und.) an expert pickpocketing team.

[US]Dly Press (Newport News, VA) 19 Apr. 12/3: ‘Gun mobs’ never consist of less than three men, and often five or six.
[Can] ‘Thieves’ Sl.’ Toronto Star 19 Jan. 2/5: POCKET PICKING GANG Gun mob.
[US]J. O’Connor Broadway Racketeers 252: Gun Mob—A group of three or more pickpockets.
[US]Irwin Amer. Tramp and Und. Sl. 93: Gun Mob.—A gang of pickpockets.
[US]Goldin et al. DAUL 88/2: Gun-mob. A gang of thieves, especially of pickpockets.
gun moll (n.)

see separate entry.

gunsmith (n.)

1. a thief.

[UK]Temple Bar xxv 213: ... returned to his old trade of gunsmith, gunning being the slang term for thieving, or going on the cross [F&H].
[UK]Farmer & Henley Sl. and Its Analogues.

2. (US) an older thief who trains young criminals.

[US] (ref. to 1910) D. Maurer ‘Lingo of the Good People’ AS X:1 16/2: gunsmith or gun-maker. One who trains young criminals, especially pickpockets.
[US]Goldin et al. DAUL 89/1: Gunsmith. An experienced pickpocket who trains young guns, or pickpockets.
high gun (n.)

(US Und.) an especially skilful thief.

[US]Ogden Standard (UT) 7 Mar. 12/2: The pickpocket [...] is known as [...] [...] a ‘cannon.’ Being ‘on the cannon is, in the lingo of thieves, equivalent to being a ‘high gun’ or in the higher realms of thievery.

In phrases

beef gun (v.)

(US Und.) to shout out that one’s pocket has been picked.

[US]D. Maurer Big Con 109: He discovered his loss and ‘beefed gun’ at a great rate.
punch (the) gun (v.)

(US Und.) to use criminal slang.

[US]Jackson & Hellyer Vocab. Criminal Sl. 67: punching gun [...] The use of criminal slang; ostentatious display of sophistication. Example: ‘He can punch gun till the cows come home, but he can’t get a can of water out of a water tank.’.
[US]Goldin et al. DAUL 166/2: Punch the gun. (Chiefly carnival) To talk in underworld slang.