boretto-man, n. — Green’s Dictionary of Slang

boretto-man n.

[SE bore + Ital. dimin. sfx -etto; i.e. ‘a little borer’]

a male homosexual.

1699		N. Ward London Spy VII 166: Some of them [...] are Pensioners to the Petticoat, some Boretto-Men at the Groom-Porters.
1965		Guild Dict. Homosexual Terms 5: boretto man (n.): An active pederast.