Green’s Dictionary of Slang

nighthawk n.

1. (also hawk, night-shark) anyone who likes to stay up late, usu. for reasons of criminality; also attrib.

[Scot]W. Scott Rob Roy (1883) 323: There are night-hawks abroad.
[US]Whip & Satirist of NY & Brooklyn (NY) 19 Mar. n.p.: The market is still thronged with buzzards and night-hawks, and the streets are full of filthy females.
[Aus]Bell’s Life in Sydney 14 Aug. 3/2: Two gents, of the night-hawk tribe, went into the hotel.
[US]Calif. Police Gazette 10 Apr. 2/3: This would have been a nice thing for the ‘night hawks’ had they discovered him before the officer took him in custody.
[US]N.Y. Times 4 Feb. 2/6: The saloon was full of sporting men and Broadway night-hawks.
[US]Lantern (N.O.) 27 Oct. 3: All the nighthawks congregate here.
[Aus]C. Crowe Aus. Sl. Dict. 52: Night Hawks, poachers or prostitutes.
[US]‘Hugh McHugh’ I’m from Missouri 102: Only a few night-hawks remained.
[US]Day Book (Chicago) 29 Dec. 24/1: About a week previous in his nighthawk wanderings he was attracted by a big fire.
[US]Goodwin’s Wkly (Salt Lake City, UT) 13 May 6/2: There are any number of rough-neck night-hawks who make a business of going to the best cafes.
[US]Coon-Saunders Original Night Hawk Orchestra [instrumental title] Night Hawk Blues.
[US]C. Himes ‘A Modern Marriage’ Coll. Stories (1990) 118: Her handsome, fickle, nighthawk husband, Eddie.
[US]Pittsburgh Courier (PA) 20 June 21/1: Thew hawks are finding a new after-midnite interest in Ross and Jerry’s Seventh Ave. Sandwich Shop.
[US]D. Dodge Bullets For The Bridegroom (1953) 27: It’s usually slack about this time. The night-hawks are folding up, and the morning crowd comes in after breakfast.
[US]R. Campbell In La-La Land We Trust (1999) 27: In spite of the weather, nighthawks were finally gathering outside Gentry’s.
[US]W.T. Vollmann Whores for Gloria 2: The street was full of night-sharks.
[US](con. 1940s–60s) Décharné Straight from the Fridge Dad.

2. (US) a worker on a night shift.

[US]‘Mark Twain’ letter 8 Jan. in Letters (1917) I 9: Jack Van Nostrand, Dan and I, (all Quaker City night-hawks,) had a blow-out at Dan’s house.
[US]W. James Lone Cowboy 134: I’d get to see the boys [...] whenever they changed horses, and when the ‘Nighthawk’ (night-wrangler) took my place in herding the horses for the night. [Ibid.] 172: The jinx seemed to’ve camped on that outfit’s tail, far as nighthawks was concerned. One had been busted up pretty bad [...] Another had been killed by lightning.
[US]A. Woollcott While Rome Burns 180: Your correspondent, a nighthawk of parts in those days, was within ear-shot.
[US]Monteleone Criminal Sl. (rev. edn) 162: nighthawk [...] a night watchman.
[US](con. 1908) J. Monaghan Schoolboy, Cowboy, Mexican Spy 42: He was the outfit’s nighthawk [...] A night herder’s job was important.

3. (US, also hawk) a taxi that plys for trade at night; also its driver.

Monterey Sentinel 4 Aug. 1/1: And don’t you remember the Sundays, Bill Burns? Where the ‘night hawks’ and drivers would come [DA].
[US]A. Trumble Mysteries of N.Y. 15: [T]he night-hawks of New York are birds the average citizen had best beware of.
[US]A. Trumble Mysteries of N.Y. 16: When the dance-house lights are extinguished, [...] the hawks prowl off, or to use the expression of the craft, ‘goes cruising’.
[US]Fort Worth Dly Gaz. (TX) 15 Nov. 6/3: The all-night hack-drivers[...] the ‘night-hawk’ as he is called.
[US]R.H. Davis ‘How Hefty Burke Got Even’ 🌐 Stuff M’Govern, who drove a night-hawk, and who was a particular admirer of Hefty’s, even though as a cabman he was in a higher social scale than the driver of an ice-cart, agreed to carry Hefty and his half-ton of armour to the Garden.
[US]Scribner’s Mag. XXIII 443/2: Standing at the curb [...] are a few ‘night hawks’ [DA].
[US]St Louis Republican (MO) 28 May 4/3: He drives away, leaving the cabman [...] His face is known to every ‘nighthawk’ in the tenderloin.
[US]‘O. Henry’ ‘From the Cabby’s Seat’ Four Million (1915) 167: Night-hawk was Jerry called, but no more lustrous or cleaner hansom than his ever closed its doors upon point lace and November violets.
[US]Wash. Herald (DC) 11 Jan. 34/2: He must have seen the night-hawk cab [...] that sodden-leathered nighthawk went placidly rolling up Fifth Avenue.
[US]R. Chandler ‘The King in Yellow’ Spanish Blood (1946) 53: There were two nighthawk cabs in the line.
[US]Lait & Mortimer USA Confidential 62: The wise nighthawk pulled up before a police station and ran in.
[US](con. 1940s–60s) Décharné Straight from the Fridge Dad.

4. a prostitute.

[US]Life in Boston & N.Y. (Boston, MA) 11 Oct. n.p.: Next on my list are those three night hawks, Sal C—r, Ellen F—n, and Lib D.
[US]S.F. Call 10 Jan. 13/1: Half the chorus girls on Broadway called him by his first name and any nighthawk in the tenderloin could take him home at 2 o’clock in the morning.
[Can]A. Stringer Under Groove 5: I want it all, from the old Irish news-women and [...] the night-hawks of the Tenderloin.
[US]M.G. Hayden ‘Terms Of Disparagement’ in DN IV:iii 209: night-hawk, a [...] harlot.
[US]P. Paul ‘The Madame Plays the Gee-Gees’ in Gun Molls Sept. 🌐 Enamored momentarily by the glamour of some peroxided Broadway night hawk.
[US]Monteleone Criminal Sl. (rev. edn).
[Aus]N. Pulliam I Travelled a Lonely Land (1957) 236/2: night hawk (night worker) – [...] sometimes a prostitute.
[US]Trimble 5000 Adult Sex Words and Phrases.
[US]H. Rawson Dict. of Invective (1991) 37: Similar terms for women who ply their trade after the sun goes down include nightbird, nighthawk, and owl.

5. (Aus./US) a thief, esp. one who works at night.

[US]Progress (Shreveport, LA) 2 Apr. 4/3: Bienville parish has her lawless night-hawks too.
[US]M.G. Hayden ‘Terms Of Disparagement’ in DN IV:iii 209: night-hawk, a thief.
[Aus]N. Pulliam I Travelled a Lonely Land (1957) 236/2: night hawk (night worker) – usually a thief.
[UK]R. Fabian Anatomy of Crime 194: Night Hawk: Burglar.
[US]R. Klein Jailhouse Jargon and Street Sl. [unpub. ms.].
[UK]J. Morton Lowspeak 104: Nighthawk – burglar.