Green’s Dictionary of Slang

(US black) a liquor store.

1947		M.H. Boulware Jive and Sl.
1996–2000		(con. 1940s) Deuce Ofay Productions ‘The Jive Bible’ at JiveOn.com 🌐 ABC (American Business College): n. A retail establishment specializing in the distribution of alcoholic beverages to the masses; See Happy Shack.

an erotic picture postcard.

1930		‘Dean Stiff’ Milk and Honey Route 152: At one time the hobo enjoyed almost exclusively the ‘French post cards’ (called ‘American cards’ in France).
1989		H. Rawson Dict. of Invective (1991) 7: The invention of photography, made it possible to produce what were politely called French prints and French postcards (or American cards in France).

sexual intercourse in the face-to-face ‘missionary position’.

1989–2002		Lifestyle of the Adult 🌐 american culture: Traditional guy-on-top, girl-on-bottom intercourse; ‘missionary position’.
2002		Swingers Board 🌐 american culture Man on top, the missionary position.

a very loud steam whistle used to summon local factory workers to a shift.

1870		Sportsman (London) 12 Nov. 4/1: The ‘American devil’ is used for the purpose of waking up working men at an early hour of the morning, and the animal or instrument performs its work so effectually that one newspaper [...] complains that the noise made is enough to waken the sleepers for fifty miles round.
1875		J. Ruskin Works 262: The new steam-whistle at the foundry, commonly called the ‘American Devil;’ [...] could be heard five miles off.
1884		A.M. Mayer Sport with Rod & Gun 482: [An] ‘American devil,’ as the English term our steam-whistle, was faithfully represented in the uproar.
1890-1904		Farmer & Henley Sl. & Its Analogues I 272: american devil, subs . phr . ( workmen's ) . — A steam whistle or ‘hooter’; used in place of a bell for summoning to work.

(Irish) unpopular fatty bacon, imported from the US.

1909		Fermanagh Herald 20 Feb. 7/: ‘Irish versus American Bacon’ [...] This inferior article — commonly known as ‘the lad’.
1942		Waterford Standard 14 Nov. 1/3: [T]he importation of what he described as ‘American Lad,’ and other imported foreign bacon.
1987		(con. 1920s) L. Redmond Emerald Square 219: ‘Did yeh get a piece a’ the lad?’ ‘The lad’, I might mention, was cheap, fatty American bacon.
1997		Share Slanguage.

group sex between one woman and two men; the woman simultaneously fellates one man while being taken from the rear by the other.

1999

Roger’s Profanisaurus 3 in Viz 98 Oct. 3: American trombone n. A horny trio of two men and one woman, who plays the spunk trumpet of one of the men, whilst the other strikes up the double bass (qv). A spit roast.

Park Lane Hotel, London.

1939

in Herbert Hodge Cab, Sir? in DSUE (1984).