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

Two \Two\, n.
   1. The sum of one and one; the number next greater than one,
      and next less than three; two units or objects.

   2. A symbol representing two units, as 2, II., or ii.

   {In two}, asunder; into parts; in halves; in twain; as, cut
      in two.