noun
male prostitute; rent boy
Slang term for a man who sells sex to other men; used in gay subculture contexts.
彼は新宿二丁目で売り専として働いている。
He works as a rent boy in Shinjuku Ni-chōme.
noun
gay brothel
Refers to an establishment where male prostitutes work; often used in the context of gay sex services.
あのビルの三階に売り専があるらしい。
I heard there's a gay brothel on the third floor of that building.
Abbreviation of 売り専門 (uri senmon, 'specializing in selling'), narrowed to refer to male prostitution in gay slang.