#brace  a support that steadies or strengthens something else; "he wore a brace on his knee"
  supertype:  #support.device  #strengthener
  subtype:  #ankle_brace  a brace worn to strengthen the ankle
  subtype:  #back_brace  a brace worn to support the back
  subtype:  #knee_brace  a brace worn to strengthen the knee
  subtype:  #neck_brace  a brace worn to steady the neck
  subtype:  #skeg  a brace that extends from the rear of the keel to support the rudderpost

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