Green’s Dictionary of Slang

omee n.

also homa, homer, homie, omer
[Polari, Ital. uomo, a man]

1. a master, a boss, a landlord.

[UK]Hotten Dict. of Modern Sl. etc. 70: OMEE, a master or landlord. ‘The omee of the cassey’s a nark on the pitch,’ the master of the house will not let us perform.
[UK]Hotten Sl. Dict. [as cit. 1859].
[UK]Sl. Dict.
[UK]Newcastle Courant 25 Nov. 6: Who’d have thought the omee of the carsey would have taken it into his noddle to come home.
[UK]F.W. Carew Autobiog. of a Gipsey 409: Square indeed! I’ll square the chatty flymps [...] I’ll precious quick make ’em granny who’s omee here.

2. a man; often (gay) a heterosexual man.

[UK](con. 1840s–50s) H. Mayhew London Labour and London Poor III 47/2: ‘Fiela’ is a child; ‘Homa’ is a man. [Ibid.] 139/2: ‘Nanti, his nabs is a keteva homer’ – No, he’s a bad sort.
[UK]N. Devon Jrnl 8 Feb. 7/2: [from The Echo] From the |Ialian we get [...] donny for woman (donna), and omee for man (uoma).
[UK]‘Dagonet’ ‘A Plank Bed Ballad ’ in Referee 12 Feb. n.p.: Oh, donnys and omees, what gives me the spur, – / Is, I’m told by a mug (he tells whoppers), / That I ought to have greased to have kept out of stir / The dukes of the narks and the coppers.
[UK]P.H. Emerson Signor Lippo 42: When I got back the cullies said, ‘Well, cully, how did you get on with the omer?’.
[UK]P. Allingham Cheapjack 319: Homey (’Omey) – A man.
[UK]R. Hauser Homosexual Society 104: I guess it’s the same with Homies (heterosexuals) who settle down to marriage when they get older and find the girls are not exactly fainting over them. [Ibid.] 167: Homie, man (male).
[UK]Took & Feldman ‘Bona Bijou Tourettes’ Round the Horne 30 Apr. [BBC radio] Divine. Sitting, sipping a tiny drinkette, vada-ing the great butch omis and dolly little palones trolling by.
[US]B. Rodgers Queens’ Vernacular 190: heterosexual [...] homie (ho’-me, Brit gay sl, fr Parlyaree // It uomo = man).
[US]Maledicta VI:1+2 (Summer/Winter) 139: Parlyaree in homosexual use […] gives us nanti (no), bona[r] (good), [h]omi[e] (man).
[US]M. Coward in Verbatim 24:2 n.p.: An omi is a man, a palone is a woman, and an omipalone is therefore self-explanatory.
[UK] (ref. to 1950s–60s) Baker & Stanley Hello Sailor! 94: The Polari term for a seafarer who engaged in gay sex without identifying as gay, was trade omee.