Green’s Dictionary of Slang

(Ling. Fr./Polari) a male homosexual.

1962		R. Hauser Homosexual Society Appendix 3, 167: Homi-Polone, bitch.
1972		B. Rodgers Queens’ Vernacular 109: homi-polone (Brit gay sl, fr Parlyaree // It uomo = man + polone = woman) man taking the passive role in anal investigations.
1999		M. Coward in Verbatim 24:2 n.p.: An omipalone’s walk might be described as a mince. Mincing is less purposeful than trolling, with its echoes of ‘trawling’.
2002		P. Baker Polari 42: While an omee refers to any man, and palone to any woman, the word omee-palone (man-woman) refers specifically to a homosexual man.
2007		(ref. to 1960s) E. Glinert West End Chronicles 116: [In the radio show Round the Horne] Kenneth Williams and Co. would suddenly burst into a monologue along the lines of ‘Ooh vada well the omee-palone ajax who just trolled in’.
2010		W. Ings ‘Trolling the Beat to Working the Soob’ in Int’l Jrnl Lexicog. 23:1 64: Polari words like [...] omi palone (an effeminate man), nantee (nothing), and vada (to look) appeared in wider gay slang.
2019		P. Baker Fabulosa 293/2: HP a gay man (homee-palone [...] ) 295/2: omee-palone, homee-palone a gay man.
2023		R. Milward Man-Eating Typewriter 5: Our go-to omi-palone [...] had a mouth like a Billingsgate halibut, and [...] a rectum more accomodating than a Salvation Army shelter.