Drummer

n.
  1. One whose office is to best the drum, as in military exercises and marching.
  2. One who solicits custom; a commercial traveler.
  3. (Zoöl.) A fish that makes a sound when caught
  4. (Zoöl.) A large West Indian cockroach (Blatta gigantea) which drums on woodwork, as a sexual call.
    1. The squeteague.
    2. A California sculpin.