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

Boring \Bor"ing\, n.
   1. The act or process of one who, or that which, bores; as,
      the boring of cannon; the boring of piles and ship timbers
      by certain marine mollusks.

            One of the most important applications of boring is
            in the formation of artesian wells.   --Tomlinson.

   2. A hole made by boring.

   3. pl. The chips or fragments made by boring.

   {Boring bar}, a revolving or stationary bar, carrying one or
      more cutting tools for dressing round holes.

   {Boring tool} (Metal Working), a cutting tool placed in a
      cutter head to dress round holes. --Knight.