DICT.TW Dictionary Taiwan

 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.]
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 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]