Green’s Dictionary of Slang

blind pig n.

also blind piggery, pig
[? the typical architecture of the earliest of such bars, a blank facade bereft of windows and with only a small peep-hole in its door. Alternatively f. the practice of disguising the bar as an exhibition of natural freaks; G. A. Thompson (personal correspondence) notes a ‘widely publicised case’ written up in N.Y. Gazette & General Advertiser, Sept. 15, and N.Y. Commercial Advertiser, 14 Sept. in 1838 where a man in Dedham, Mass. ‘took out a regular license for the exhibition of a “striped pig”; he paints a pig appropriately, charges “four pence hapenny” admission, gives a drink of liquor for free’]

(US) an unlicensed drinking house, a speakeasy, an ‘after-hours’ bar; also attrib.

[ D. Macrae Americans at Home II 315: In desperate cases it has to betake itself to the exhibition of Greenland pigs and other curious animals, charging 25 cents for a sight of the pig and throwing in a gin cocktail gratuitously].
Minnesota General Statutes Supplement (1888) 248: Whoever shall attempt to evade or violate any of the laws of this state ... by means of the artifice or contrivance known as the ‘Blind Pig’ ... shall ... be punished [DAE].
[US]St. Paul Globe (MN) 23 Nov. 5/3: [headline] Drunks, Vags and Blind Piggeries / Punished by Judge Mahoney.
[UK]G.A. Sala in Daily Tel. 25th Oct. in Ware (1909) 110/2: In many places (U.S.A.), especially in the cities, the existence of the law makes no real difference; in some few, by fits and starts, it is rigidly enforced, and the consequence is that the drinking is driven underground, into what they variously call ‘dives’, ‘speakeasies’, and ‘kitchen bar rooms’ in the North; and ‘blind pigs’ and ‘blind tigers’ in the South.
[US]Jamestown Wkly Alert (ND) 13 Apr. 4/3: Attorney general Standish has delegated State Senator John Burke to prosecute the blind piggeries [...] The W.C.T.U. ladies recently visted the ‘joints,’ yclept pigs, for evidence of illgal liquor traffic.
Bismarck Wkly Trib. (Dakota, ND) 8 June 5/2: ‘Blind Pigs’ [...] It is hoped [...] that not on or more who have been engaged in the liquor business [...] intend to continue under the ‘blind pig’ system.
[US]Williston Graphic (ND) 29 Nov. 1/6: More ‘Guff’ from the Cranks. [...] The Enforcement League has set to work [...] to the suppress the blind piggeries.
[US]Junie McCrea & Albert Von Tilzer [song title] Bl—d and P—g spells Blind Pig.
[US]Imperial Valley Press (El Centro, CA) 11 Apr. 11/1: Evidence was obtained against Robert Hal who runs a ‘blind piggery’.
[Aus]Bulletin (Sydney) 13 Oct. 19/3: I’ve often wondered what the Americans mean when they speak of ‘boot-leggers,’ ‘pocket-peddlers,’ ‘blind tigers,’ ‘speak-easys’ and ‘blind pigs’ in connection with the ‘dry’ territories in the land of the grilled nigger. I know, of course, that they are all contrivances for the illicit sale of grog [...].
[US]Ade ‘The New Fable of the Wandering Boy’ in Ade’s Fables 127: Being in the heart of the Residence District, this select Organization could not obtain a regular License. However, having the moral support of the Best People, it maintained a Blind Pig.
Evansville Press (IN) 12 June 3/3: Managers of blind piggeries, drug store men who have been openly defying the new law and all such other violators are looking askance at the handwriting on the wall.
Santa cruz Eve. News (CA) 17 May 1/3: The great majority [...] desire the speedy abolishment of the blind piggeries .
[US]N. Anderson Hobo 67: In Chicago today bootleggers and blind pigs in the vicinity of the ‘stem’ thrive upon the homeless man’s love for liquor.
[UK]K. Mackenzie Living Rough 27: If it’s booze you are after I guess we can take you into some blind pig where you can get a drink.
[US]W.L. Gresham Nightmare Alley (1947) 32: I bet that joint is a blind pig.
[US]Goldin et al. DAUL 157/1: Pig. [...] 2. (Abbreviation of blind pig) An illicit establishment with a deceptively innocent exterior, as a cheap barroom or roadhouse often housing prostitution and gambling units.
[US]Lait & Mortimer USA Confidential 127: Started in 1937 primarily as a blind pig and turned into a late spot after the repeal of the state’s tough liquor law.
[US]J. Hersey Algiers Motel Incident 94: It was a raid on a blind pig that touched off the Detroit riot of 1967. [Ibid.] 95: He wanted one of our men to [...] find out where it was, get a drink and bust the pig.
[US]‘Iceberg Slim’ Mama Black Widow 37: A blind pig and poker trap in Vicksburg’s sin district.
[US]S. King It (1987) 454: They wasn’t speakeasies; that was too grand a name for em [...] They was what folks called ‘blind pigs’. [Ibid.] 455: You could pick up a woman at any pig.
[US]H. Rawson Dict. of Invective (1991) 298: A blind pig (also a blind tiger) is a place where liquor is sold illegally.
[US]I.L. Allen City in Sl. (1995) 72: The old terms blind tiger and blind pig were revived for humorous use during Prohibition and New Yorkers applied them to any speakeasy.
[US](con. 1949) G. Pelecanos Big Blowdown (1999) 210: Morgan [...] had sent her over to that colored reefer party at the blind pig off 7th.
T. McCauley ‘For Whom No Bells Toll’ in ThugLit Mar. [ebook] We were in a blind pig where I knew this kind of dust-up was frowned on.

In derivatives

blind piggery (n.)

(Aus.) the selling of liquor in an unlicensed establishment.

[US]St. Paul Globe (MN) 4 Feb. 6/6: When the law makes it a fine or imprisonment for any unlicensed person to keep intoxicating liquor [...] blind piggery will disappear.
Bismarck Wkly Tribune (ND) 15 Sept. 5/3: Thos. M. Farland [...] is in the toils for blind pigger.
[US]Arizona Republic (Phoenix, AZ) 16 Feb. 7/1: Greenaway [...] realized that prohibition would mean only a clever system of blind piggery.
[US]Salt Lake Tribune (UT) 17 Mar. 6/4: ‘Moonshining’ and ‘blind piggery’ are institutions of long standing in this land of Zion.
[US]Ogden Standard-Examiner (UT) 8 Aug. 4/1: The bootlegging and blind piggery which prohibition has forced upon and long suffering an defenceless people.