jeer, jere, geer [‘jeer’ to rhyme with ‘ear’]
1 the backside, the buttocks, the anus 19-.
2 excrement 20-.
jeer cane a toilet 20-.
verb to defecate: I will geer my trousers first, before I come doon... 20-. etymology: Partridge records: ‘A turd; Cant since 1700. 2. Hence (?) one’s backside:’; verb attested by the Galloway Tinkler-Gypsies; sense 2 and the verb attested in Shelta which also attests jeer cowie ‘anal sex’; sense 1 attested by BS in TDITA and JS; noun sense 2, verb and form geer attested by SS; jeer cane attested by SR note:

Smart & Crofton (1875) collected Jeer ‘the anus’ or ‘the rump’ from English Gypsies.

Canadian Paul Pope (2013) cites the forms ajeer and geer sense 1.