Source : Webster's Revised Unabridged Dictionary (1913)

One \One\, n.
   1. A single unit; as, one is the base of all numbers.

   2. A symbol representing a unit, as 1, or i.

   3. A single person or thing. ``The shining ones.'' --Bunyan.
      ``Hence, with your little ones.'' --Shak.

            He will hate the one, and love the other. --Matt.
                                                  vi. 24.

            That we may sit, one on thy right hand, and the
            other on thy left hand, in thy glory. --Mark x. 37.

   {After one}, after one fashion; alike. [Obs.] --Chaucer.

   {At one}, in agreement or concord. See {At one}, in the
      Vocab.

   {Ever in one}, continually; perpetually; always. [Obs.]
      --Chaucer.

   {In one}, in union; in a single whole.

   {One and one}, {One by one}, singly; one at a time; one after
      another. ``Raising one by one the suppliant crew.''
      --Dryden.