#bell  a hollow device made of metal that makes a ringing sound when struck
  supertype:  #acoustic_device  #signaling_device
  part:  #clapper  #sound_bow
  subtype:  #church_bell  a bell in a church tower (usually sounded to summon people to church); "church bells were ringing all over town"
  subtype:  #cowbell  a bell hung around the neck of cow so that the cow can be easily located
  subtype:  #death_bell__deathbell__death_knell__deathknell  a bell rung to announce a death
  subtype:  #dinner_bell  a bell rung to announce that dinner has been served
  subtype:  #electric_bell  a bell activated by the magnetic effect of an electric current
     subtype:  #telephone_bell__telephonebell  electric bell that rings to signal a call
  subtype:  #fire_bell  a bell rung to give a fire alarm
  subtype:  #Liberty_Bell  the bell of Independence Hall; rung 8 July 1776 to announce the signing of the Declaration of Independence
  subtype:  #school_bell  a bell rung to announce beginning or ending of class
  subtype:  #sheep_bell__sheepbell  a bell hung round the neck of a sheep so that the sheep can be easily located
  subtype:  #shop_bell  a bell attached to the door of a small shop; warns the proprietor that a customer has entered the shop
  subtype:  #sleigh_bell__cascabel  bell attached to a sleigh, or to harness of horse pulling a sleigh
  subtype:  #warning_bell__warningbell  a bell used to sound an alarm

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