Green’s Dictionary of Slang

1. to hang.

1610		Beaumont & Fletcher Scornful Lady III ii: He had a bastard, his own toward issue, Whippe’d and then cropp’d.
1764		Foote Patron in Works (1799) I 335: And so get cropp’d for a libel.
1781		G. Parker View of Society II 30: Sentencing some more to be crapped; others to lump the Lighter; and others to nap the Stoop.
1789		G. Parker Life’s Painter 155: I don’t recollect that I have crap’d a man better for this twelvemonth.
1791		H. Lemoine ‘Education’ in Attic Misc. 116: And from the start, the scamp, are cropt at home.
1809		G. Andrewes Dict. Sl. and Cant n.p.: crapp’d executed.
1811		Lex. Balatronicum.
1824		‘Sonnets for the Fancy’ Egan Boxiana III 622: And from the start the scamps are cropp’d at home.
1833		‘The Slap-Up Cracksman’ in Swell!!! or, Slap-Up Chaunter 43: By our pals already crap’d, / By our pals but lately tap’d, / By our pals that may be trap’d / Let us mount for bile.
1848		Flash Dict. in Sinks of London Laid Open.
c.1850		Duncombe New and Improved Flash Dict.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1882		Sydney Sl. Dict. (2 edn) 3: Cropped - Hanged.

2. in excl., e.g. crap me!, crop me!

1760		Foote Minor in Works (1799) I 247: Crop me, but this Squintum has turn’d her head.
1789		G. Parker Life’s Painter 134: Crap me but I must shove my trunk, and hop the twig — I see as how there’s nothing to be got in this here place.
1833		‘The Masqueraders’ in Corinthian in Spedding & Watt (eds) Bawdy Songbooks (2011) IV 42: [as 1789].