Green’s Dictionary of Slang

machine n.

1. in sexual contexts.

(a) a prostitute.

[UK]J. Dunton Life and Errors 273: In comes a Charming Machine [who declares] she never marri’d [...] unless ’twas for a Quarter of an Hour, or so.

(b) (also electric machine, infernal machine, spit-fire machine) the penis.

Monsieur Thing’s Origin 7: Some say it was the Duchess Mazarine Was first Contriver of this Fine Machine.
[UK] ‘You Fair, Who Play Tricks’ in Farmer Merry Songs and Ballads (1897) V 197: And for G--’s sake take care to grease well the Machine. / For your Thing is so stiff, and my Hole is so small.
A Spy on Mother Midnight I 28: Keep it in a due Position, and give it it’s proper Motion; and, I think, in that lyes the Beauty of the Thing, and the Pleasure of the Use of it; for what signifies a great lubberly Machine, which moves slowly.
[UK]Cleland Memoirs of a Woman of Pleasure (1985) 25: Her sturdy stallion [...] produced naked, stiff, and erect, that wonderful machine which I had never seen before. [Ibid.] 45: That terrible spit-fire machine which had [...] with such fury broke into, torn, and almost ruin’d those soft tender parts of mine.
[Scot]Boswell London Journal 4 June n.p.: I went to the Park and picked up a low brimstone, called myself a barber and agreed for sixpence [...] and dipped my machine in the Canal and performed most manfully.
[UK]‘R. Birch’ ‘Venus School-Mistress’ in Pettit & Spedding 18C British Erotica III (2004) 7: After he had received about fifty lashes, he found himself able to thrust his machine into her.
[UK] ‘The Philosopher’s Stone’ in Gentleman’s Spicey Songster 9: And, if that he pleased but to give his consent, sirs, / She’d take a shock from his electric machine.
[US]Venus’ Miscellany (NY) 31 Jan. n.p.: A curious looking machine long, straight, and ruby coloured [ibid.] 23 May/ n.p.: I soon got out my infernal machine, which was soon trying to force a passage.
[UK]Cythera’s Hymnal 24: With such a large machine, his calling should have been / A feeling and a fucking all the dames.
[UK]‘Walter’ My Secret Life (1966) I 36: Then I began to have cock-stands and suppose a pleasurable feeling about the machine.
[UK]Forbidden Fruit n.p.: She commenced rubbing the nose of my machine in a moist sort of chink embowered in the silky hair at the bottom of her stomach.
[UK]More Forbidden Fruit 15: Mary [...] took possession of my still stiff machine and sucked it.
[US] in G. Legman Limerick (1953) 245: A girl of as graceful a mein / As ever in London was seen, / Stepped into a pub, / Hit her man with a club, / And razored to shreds his machine.
[US]E. Thompson Garden of Sand (1981) 141: He started her fondling his limp machine.

(c) a condom.

[UK]Harlot’s Progress 30: The Box serv’d too for other Uses, / To hold Machines for broken Sluices.
[UK]Nocturnal Revels 2 224: [He] has already made a great improvement upon Mrs. Phillips’s Machines, by securing them in such a manner that they can never break in action.
[UK]Grose Classical Dict. of the Vulgar Tongue n.p.: Machines, Mrs. Philips’s ware. See cundum.
[UK]Lex. Balatronicum [as cit. 1785].

(d) the vagina.

[UK]‘Walter’ My Secret Life (1966) I 170: I could not [...] look at a cunt for a minute without my cock standing. Then I rushed it up the machine.
[UK]Farmer & Henley Sl. and Its Analogues.
[US]P. Medley ‘Laundromat Blues’ 🎵 Give my baby twenty minutes and she’ll make you lose your mind / My baby’s got the best machine, the best washing machine in town.

2. (N.Z.) a Totalizator.

Reeves in Woodhouse Farm and Station Verse (1950) 22: What a lot [of money] you left behind in the machine [DNZE].
Williams & Reeves In Double Harness 8: When racing was developed by the aid of the machine [DNZE].
[NZ]N.Z. Observer (Auckland) 30 July 3: Honest bookmakers...are in some respect preferable to the machine [DNZE].
Taranaki Herald (New Plymouth) 23 Aug. 3: An electric machine has a tremendous advantage over the old manual totalisator [DNZE].
Southern Cross (Wellington) 15 Aug. 9: Each paid more than £25 on the win machine [DNZE].

3. (US) an automobile.

[US]B. Fisher A. Mutt in Blackbeard Compilation (1977) 121: He’ll [...] spring for a machine so as to not miss anything.
[US]Cincinnati Enquirer (OH) 12 May 12/1: ‘I busted out ontuh the drag agin, lookin’ fer a musheen tuh frisk’.
[UK]R. Carr Rampant Age 10: I wantcha to promise me, Skeeter, that you won’t ever go out in a machine alone with Gertrude Humphries!
[US]W.D. Myers All the Right Stuff 193: [A]n argument between some guys on a street-cleaning truck and a brother who didn’t want them throwing dirt on his machine.

4. (drugs) a hypodermic syringe [machinery n. (3)].

[UK]D. Powis Signs of Crime 192: Machine Hypodermic syringe.

5. (US) a motorcycle.

[US]H. Selby Jr. Last Exit to Brooklyn 85: [H]ed come back to the Greeks and tellus about the great Harley-Davidson machine he saw.

6. (UK black/gang) a gun.

[UK]T. Thorne (ed.) ‘Drill Slang Glossary’ at Forensic Linguistic Databank 🌐 Machine - gun.