#cleat  a metal or leather projection (as from the sole of a shoe); prevents slipping
  supertype:  #projection  any structure that branches out from a central support
  subtype:  #calk  a metal cleat on the bottom front of a horseshoe to prevent slipping
  part of:  #cleats  a pair of shoes with cleats on the soles; "the football players all wore cleats"

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