資料來源 : Webster's Revised Unabridged Dictionary (1913)

Curb \Curb\, n.
   1. That which curbs, restrains, or subdues; a check or
      hindrance; esp., a chain or strap attached to the upper
      part of the branches of a bit, and capable of being drawn
      tightly against the lower jaw of the horse.

            He that before ran in the pastures wild Felt the
            stiff curb control his angry jaws.    --Drayton.

            By these men, religion,that should be The curb, is
            made the spur of tyranny.             --Denham.

   2. (Arch.) An assemblage of three or more pieces of timber,
      or a metal member, forming a frame around an opening, and
      serving to maintain the integrity of that opening; also, a
      ring of stone serving a similar purpose, as at the eye of
      a dome.

   3. A frame or wall round the mouth of a well; also, a frame
      within a well to prevent the earth caving in.

   4. A curbstone.

   5. (Far.) A swelling on the back part of the hind leg of a
      horse, just behind the lowest part of the hock joint,
      generally causing lameness. --James Law.

   {Curb bit}, a stiff bit having branches by which a leverage
      is obtained upon the jaws of horse. --Knight.

   {Curb pins} (Horology), the pins on the regulator which
      restrain the hairspring.

   {Curb plate} (Arch.), a plate serving the purpose of a curb.
      

   {Deck curb}. See under {Deck}.

資料來源 : WordNet®

curb bit
     n : a horse's bit with an attached chain or strap to check the
         horse [syn: {curb}]