drum·mer /ˈdrʌmɚ/
 鼓手,旅行推銷員
 Drum·mer n.
 1. One whose office is to best the drum, as in military exercises and marching.
 2. One who solicits custom; a commercial traveler. [Colloq. U.S.]
 3. Zool. A fish that makes a sound when caught; as: (a) The squeteague. (b) A California sculpin.
 4. Zool. A large West Indian cockroach (Blatta gigantea) which drums on woodwork, as a sexual call.
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 drummer
      n : someone who plays a drum