资料来源 : Webster's Revised Unabridged Dictionary (1913)

   2. A wedgelike piece of stone, wood metal, or other material,
      used for various purposes, as:
      (a) (Masonry) to support and steady a stone.
      (b) (Gun.) To support the breech of a cannon.
      (c) (Print.) To wedge or lock up a form within a chase.
      (d) (Naut.) To prevent casks from rolling.

   {Hollow quoin}. See under {Hollow}.

   {Quoin post} (Canals), the post of a lock gate which abuts
      against the wall.