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.

At \At\, prep. [AS. [ae]t; akin to OHG. az, Goth., OS., & Icel.
   at, Sw. [*a]t, Dan. & L. ad.]
   Primarily, this word expresses the relations of presence,
   nearness in place or time, or direction toward; as, at the
   ninth hour; at the house; to aim at a mark. It is less
   definite than in or on; at the house may be in or near the
   house. From this original import are derived all the various
   uses of at. It expresses: 

   1. A relation of proximity to, or of presence in or on,
      something; as, at the door; at your shop; at home; at
      school; at hand; at sea and on land.

   2. The relation of some state or condition; as, at war; at
      peace; at ease; at your service; at fault; at liberty; at
      risk; at disadvantage.

   3. The relation of some employment or action; occupied with;
      as, at engraving; at husbandry; at play; at work; at meat
      (eating); except at puns.

   4. The relation of a point or position in a series, or of
      degree, rate, or value; as, with the thermometer at
      80[deg]; goods sold at a cheap price; a country estimated
      at 10,000 square miles; life is short at the longest.

   5. The relations of time, age, or order; as, at ten o'clock;
      at twenty-one; at once; at first.

   6. The relations of source, occasion, reason, consequence, or
      effect; as, at the sight; at this news; merry at anything;
      at this declaration; at his command; to demand, require,
      receive, deserve, endure at your hands.

   7. Relation of direction toward an object or end; as, look at
      it; to point at one; to aim at a mark; to throw, strike,
      shoot, wink, mock, laugh at any one.

   {At all}, {At home}, {At large}, {At last}, {At length}, {At
   once}, etc. See under {All}, {Home}, {Large}, {Last} (phrase
      and syn.), {Length}, {Once}, etc.

   {At it}, busily or actively engaged.

   {At least}. See {Least} and {However}.

   {At one}. See {At one}, in the Vocabulary.

   Syn: {In}, {At}.

   Usage: When reference to the interior of any place is made
          prominent in is used. It is used before the names of
          countries and cities (esp. large cities); as, we live
          in America, in New York, in the South. At is commonly
          employed before names of houses, institutions,
          villages, and small places; as, Milton was educated at
          Christ's College; money taken in at the Customhouse; I
          saw him at the jeweler's; we live at Beachville. At
          may be used before the name of a city when it is
          regarded as a mere point of locality. ``An English
          king was crowned at Paris.'' --Macaulay. ``Jean
          Jacques Rousseau was born at Geneva, June, 28, 1712.''
          --J. Morley. In regard to time, we say at the hour, on
          the day, in the year; as, at 9 o'clock, on the morning
          of July 5th, in the year 1775.

At one \At one"\ [OE. at on, atone, atoon, attone.]
   1. In concord or friendship; in agreement (with each other);
      as, to be, bring, make, or set, at one, i. e., to be or
      bring in or to a state of agreement or reconciliation.

            If gentil men, or othere of hir contree Were wrothe,
            she wolde bringen hem atoon.          --Chaucer.

   2. Of the same opinion; agreed; as, on these points we are at
      one.

   3. Together. [Obs.] --Spenser.