#bracing__brace  a structural member used to stiffen a framework
  supertype:  #structural_member  #strengthener
  part of:  #framework
  subtype:  #crosspiece  a transverse brace
     subtype:  #crossbar  long thin horizontal crosspiece between two vertical posts
     subtype:  #rundle__spoke  one of the crosspieces that form the steps of a ladder
     subtype:  #rung__round__stave  a crosspiece between the legs of a chair
     subtype:  #cross_thwart__crossthwart__thwart  a crosspiece spreading the gunnels of a boat; used as a seat in a rowboat
     subtype:  #transom__traverse  a horizontal crosspiece across a window or separating a door from a window over it
  subtype:  #gusset_plate__gusset  a metal plate used to strengthen a joist
  subtype:  #guy_cable__guycable__guy__guyrope  a rope or cable that is used to brace something (especially a tent)
  subtype:  #stay.bracing  (nautical) brace consisting of a heavy rope or wire cable used as a support for a mast or spar
     subtype:  #backstay  a stay that supports the back of something
     subtype:  #forestay  a adjustable stay from the foremast to the deck or bowsprit; controls the bending of the mast
        subtype:  #mainstay  the forestay that braces the mainmast
  subtype:  #stringer.bracing  brace consisting of a longitudinal member to strengthen a fuselage or hull
  subtype:  #strut  brace consisting of a bar or rod used to resist longitudinal compression
  subtype:  #railroad_tie__tie__crosstie__sleeper  one of the cross braces that support the rails on a railway track; "the British call a railroad tie a sleeper"

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