Green’s Dictionary of Slang

1. a brothel.

1949

195019551960

1961

1949		Monteleone Criminal Sl. (rev. edn).
1961		X. Herbert Soldiers’ Women (1978) 314: ‘Never worked in a service station before, eh, kiddo?’ Pudsey murmured, ‘Service station?’ ‘Moll-shop...drum’.

2. (US gay) a public lavatory used for sexual assignations.

1988

1988

H. Max Gay (S)language.