Green’s Dictionary of Slang

swinging n.1

also swing
[swing v. (1)]

hanging; a hanging; also attrib.

[UK]Massinger Virgin-Martyr II i: She took us, ’tis true, from the gallows; yet I hope she will not bar yeoman sprats to have their swing.
[UK] ‘Vanity of Vanities’ in Rump Poems and Songs (1662) ii 110: For all his Ceremonious Cringing, / He shall undergo a notable Swinging.
[UK]T. Shadwell Squire of Alsatia V i: You must arrest her on a Swinging Action, which she cannot get Bail for.
[UK]New Canting Dict. n.p.: Here, Prigg, to your easy Swinging; said over a Farewell Glass to a Rogue going to be hang’d, by his Comrogues.
[UK] ‘Nights At Sea’ in Bentley’s Misc. Apr. 5895: I’m thinking swinging’s too good for you.
[Scot]R.L. Stevenson Treasure Island (1979) 75: Gentlemen of furtune [...] lives rough, and they risk swinging, but they eat and drink like fighting-cocks.
[US]Norfold Wkly News (NE) 7 June 7/1: They gave Blakey the first swingin an wuz adjustin the grass rope to Gus’ neck when [etc].