#catch.holdfast  a fastener that fastens or locks a door or window
  supertype:  #holdfast__fastener__fastening  restraint that attaches to something or holds something in place
  subtype:  #hasp  a fastener for a door or lid; a hinged metal strap fits over a staple and is locked with a pin or padlock
  subtype:  #hood_latch  a catch that holds the hood of a car shut
  subtype:  #hook.catch  a catch for locking a door
  subtype:  #latch  catch for fastening a door or gate; a bar that can be lowered or slid into a groove

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