Green’s Dictionary of Slang

homosexual.

1956		‘Charles Raven’ Und. Nights 24: I can never make up my mind whether he’s ponce, pouff, or thief.
1974		G.F. Newman You Flash Bastard 40: The DC had probably pressurised the poof barman to let him drink for nothing, and finally the iron had got the needle, or courage.
1983		J. Byrell (con. 1959) Up the Cross 19: [T]he poof hookers were afforded an unexpected treat.
1992		R.G. Barrett Davo’s Little Something 38: You and your poof mate are going to see Santana.