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Webster 1913 Edition

Noun.

A man who practices lewdness; a lecher; a whoremonger.

One keeps or procures whores for others; a pimp; a procurer.

Noun.

[supra.] One who practices lewdness.

whoremaster ‎(plural whoremasters)

(pejorative) A man who uses the services of prostitutes.
A pimp.
(figuratively) An exploiter of people.
- Dale Brown
  This one-billion-dollar TV contract is the paramount example of the injustices in the game. Look at the money we make off predominately poor black kids. We're the whoremasters.

man who uses the services of prostitutes

pimp — see pimp

exploiter of people