Green’s Dictionary of Slang

chorus man n.

[negative stereotyping]

(US) an effeminate, poss. homosexual man.

[US]G.H. Mullin Adventures of a Scholar Tramp 305: Can you imagine? Me sashurated with smell-’em-good all the time like a damned chorus-man.
[US]Wood & Goddard Dict. Amer. Sl. 16: fagot. A chorus man; an effeminate man.