Green’s Dictionary of Slang

quarter n.

1. as a sum of money.

(a) five shillings (25p), $5.

[UK]Dict. of Love n.p.: Quarter Quarter is sometimes the debt of a superannuated lady to some petty-coat pensioner Adonis, upon whom she has no beauty to operate, but that of her strong-box.
[UK]Atlantic Mag. I, 343: Every man [...] vociferously swore that he had ponied up his quarter [F&H].
[US]‘Ned Buntline’ Mysteries and Miseries of N.Y. I 64: As independent as a wood-sawyer on a rainy day with a ‘quarter’ in his pocket.
[UK] advert in ‘Ducange Anglicus’ Vulgar Tongue (1857) 45: Slap up Velveteen Togs, lined with the same, 1 pound, 1 quarter and a peg.
[UK]F. Norman Bang To Rights 121: I was well pleased with this as I had only got a quarter on in the first place.

(b) (US) $25.

[US]E.E. Landy Underground Dict. (1972).
[US]Smith & Gay Heroin in Perspective.

2. in drug and tobacco uses.

(a) (UK prison) a quarter inch of tobacco.

[UK]J. Greenwood Wilds of London (1881) 52: I have likewise seen as much as a precious ‘quarter’ (a quarter of an inch) of tobacco paid by a swell for the privilege of exchanging his trousers or another convict’s.
[Aus]Bulletin (Sydney) 30 Aug. 32/2: The brother [...] sent word asking 23 to send him a ‘chew.’ No. 23 [...] dexterously avoided the eye of Warder Lanigan, and slipped ‘a quarter’ under the gate, knowing that the tobacco-hungry consumptive would be waiting on the other side.

(b) a quarter ounce (7g) of a narcotic drug.

[US] ‘Sl. of Watts’ in Current Sl. III:2.
[US](con. early 1940s) Courtwright & Des Jarlais Addicts Who Survived 134: Then a fellow here in Harlem started selling quarters – he broke an ounce into quarters, and he would sell it for five dollars a quarter.
[US] Jayo Felony ‘Ghetto Horror Show’ [lyrics] Keys, O-Z’s and quarters.
[US]J. Lerner You Got Nothing Coming 203: Quarters, teeners, eight balls, whatever the customer wants.
D. Vrij ‘Tying Off’ on Inter-zone.org [Internet] By day, and into the evening, herion [sic.] and powder cocaine were cheap and abundant, the $15 smack quarters, were fatter than the downtown 20s, all night long the flailers, could pick up on whacks of speed.
Stormzy ‘Shut Up’ [lyrics] Dem man still go halves on a quarter.

(c) $25 worth of a given drug.

[US]D.E. Miller Bk of Jargon 343: quarter: Twenty-five dollars’ worth of drugs, as a quarter bag of heroin.
[US](con. 1986) G. Pelecanos Sweet Forever 82: Wesley had a few dimes and quarters of the same stuff [i.e. cocaine] in one pocket of his sweatpants.
[US]Ebonics Primer at www.dolemite.com [Internet] shitting dimes and quarters Definition: What one does after he’s swallowed his weed to hide it from the police Example: Man, I swallowed a half a key, now I’ll be shittin dimes and quarters for a week!
[US]ONDCP Street Terms 17: Quarter — 1/4 ounce or $25 worth of drugs.

3. as a jail sentence.

(a) (UK Und.) a three-month’s prison sentence.

[UK]J. Ware Passing Eng. of the Victorian Era 204/1: Quarter stretch (Thieves’). Three months’ imprisonment. ‘Saucy Sall’s got a quarter with hard.’.

(b) (US Und.) a 25-year prison sentence.

[US]B. Jackson Get Your Ass in the Water (1974) 87: I’m gonna see if you can’t shake this quarter off your goddamn ass.
[US]C. Shafer ‘Catheads [...] and Cho-Cho Sticks’ in Abernethy Bounty of Texas (1990) 212: quarter, n. – a twenty- five- year sentence.
[US]Bentley & Corbett Prison Sl. 22: Quarter A 25-year prison sentence. (Archaic: twenty-five boffos).
[US]R. Price Lush Life 442: We could stick him in for the full quarter, but [...] I’ll let his lawyer plea out for twenty .

In compounds

quarter bag (n.) (also quarter sack) [bag n.1 (6a)/sack n. (3c)]

(drugs) $25 worth of a given drug.

[US]R.R. Lingeman Drugs from A to Z (1970) 218: quarter bag About 1 ounce of marijuana, worth $25.
[US]Current Sl.
[US]E. Folb Runnin’ Down Some Lines 170: Dude told us he don’t sell no more ten-cent bags [...] It’s quarter [$25] bags nowadays or fifty cents [$50].
[US]Bentley & Corbett Prison Sl. 75: Quarter Bag also Quarter Sack A bag or sack of drugs costing $25.
[US]ONDCP Street Terms 17: Quarter bag — $25 worth of drugs.
quarter house (n.)

(US drugs) a place where drug users can obtain quarter-ounces of narcotics.

[US]V.E. Smith Jones Men 38: He supplied [...] wholesale pads, quarter houses and shooting galleries.

In phrases

half-quarter (n.)

(US drugs) one-eighth of an ounce (5g) of cannabis.

[US]Da Smokehouse Marijuana Gloss. [Internet] half-quarter [ca] – 1/8 of an ounce of weed.

SE in slang uses

In phrases

who put the quarter in your slot?

(US campus) a sarcastic admonition to mind one’s own business.

[US]Eble Campus Sl. Sept.