Source : Webster's Revised Unabridged Dictionary (1913)

Drift \Drift\, v. i. [imp. & p. p. {Drifted}; p. pr. & vb. n.
   {Drifting}.]
   1. To float or be driven along by, or as by, a current of
      water or air; as, the ship drifted astern; a raft drifted
      ashore; the balloon drifts slowly east.

            We drifted o'er the harbor bar.       -- Coleridge.

   2. To accumulate in heaps by the force of wind; to be driven
      into heaps; as, snow or sand drifts.

   3. (mining) to make a drift; to examine a vein or ledge for
      the purpose of ascertaining the presence of metals or
      ores; to follow a vein; to prospect. [U.S.]