Green’s Dictionary of Slang

a prostitute who works for a pimp or in a brothel rather than as an independent.

1697

J. Dunton Night-Walker Jan. 23: I took a Ramble to the Court end of the Town, whither the Pensionary Misses do for most part betake themselves, and where some, nor to say many, of ’em live like Ladies [...] I enquired after a Noted Procurer.