clap·per /ˈklæpɚ/
  拍手者,鈴舌,鐘舌
  Clap·per n.
  1. A person who claps.
  2. That which strikes or claps, as the tongue of a bell, or the piece of wood that strikes a mill hopper, etc. See Illust. of Bell.
  Clapper rail Zool., an Americam species of rail (Rallus scepitans).
  Clap·per, n.  A rabbit burrow. [Obs.]
  ◄ ►
  clapper
       n 1: someone who applauds [syn: applauder]
       2: a mobile mass of muscular tissue covered with mucous
          membrane and located in the oral cavity [syn: tongue, lingua,
           glossa]
       3: metal striker that hangs inside a bell and makes a sound by
          hitting the side [syn: tongue]