#bell  a hollow device made of metal that makes a ringing sound when struck
  supertype:  #acoustic_device  #signaling_device
  subtype:  #church_bell  #cowbell  #death_bell  #dinner_bell  #electric_bell  #fire_bell  #Liberty_Bell  #school_bell  #sheep_bell  #shop_bell  #sleigh_bell  #warning_bell
  part:  #clapper__tongue  metal striker that hangs inside a bell and makes a sound by hitting the side
  part:  #sound_bow__soundbow  contact (the part of a bell) against which the clapper strikes

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