Green’s Dictionary of Slang

1. to kill, to murder; also in fig. use; thus corpsed, dead.

1865		Leaves from Diary of Celebrated Burglar 106/2: May I be corpsed if they didn’t turn out all alike — all of the same kidney.
1879		Sporting Times 15 Mar. 1/1: A lady who may evince a propensity for milking a cow is ‘corpsed’ on the spot.
1885		Bulletin (Sydney) 2 May 12/4: The humble little incident that furnishes the text for / These modest, moral verses illustrates another thing / That we should be ever ready to swop this world for the next, for / The blow that kills a beggar will as surely corpse a king!
1891		Dead Bird (Sydney) 24 Jan. 5/2: It ain’t all beer and skittles [...] / till the Bird is nicely corpsed.
1896		A. Morrison Child of the Jago (1982) 77: If you don’t le’ go, I’ll corpse ye!
1901		W.A. Sun. Times (Perth) 17 Nov. 1/1: The half-finished balcony of the Hay street hotel is an ingeniously designed death-trap [...] no handrail is provided thereto [and] the casual inebriate has therefore only to step out and be corpsed.
1906		Sun. Times (Perth) 16 Dec. 1/1: A produce merchant’s amours will end in a corpsing.
1907		D. Stewart Shadows of the Night in Illus. Police News 6 July 12/4: ‘If this beggar is to be corpsed, ’twould be best to spill no claret over the job’.
1912		P.C. Wren Dew & Mildew 408: ‘We shall all be corpsed if he lives’.
1931		O. Strange Law O’ The Lariat 121: Whatsa good o’ two corpsed cowpunchers?
1943		R. Llewellyn None But the Lonely Heart 228: ‘Let’s go somewhere softer,’ she says. ‘That there railing’s corpsing me’. [Ibid.] 270: She’d have bloody corpsed you and saved us the worry.

2. (also corpse it) to die.

1880		Henley & Stevenson Deacon Brodie IV tab.VII iv: And is he corpsed?
1891		‘’Arry on Arrius’ in Punch 26 Dec. 303/2: Greek’s corpsed, and them graduate woters will flock to its funeral yet.
1900		Marvel 15 May 15: But did they corpse it? P’raps! P’raps not!
1905		Sun. Times (Perth) 29 Jan. 1/1: Te drowning incident didn'’taffect the gaiety of the Mayoral gaden party [...] the deadheads weren’t going to miss cheap prog for a common labourer’s corpsing.
1916		R. Service ‘My Job’ in Rhymes of a Red Cross Man 176: I’m sorry for those perishers that corpses in a bed.
2001		K. Sampson Outlaws (ms.) 42: You can believe that a little baby would be allowed to corpse in a place like this.