NOUN (3)

1. a procession of land vehicles traveling together;

2. a collection of merchant ships with an escort of warships;

3. the act of escorting while in transit;


VERB (1)

1. escort in transit;
- Example: "the trucks convoyed the cars across the battle zone"
- Example: "the warships convoyed the merchant ships across the Pacific"

The Collaborative International Dictionary of English v.0.48:

Convoy \Con*voy"\, v. t. [imp. & p. p. Convoyed; p. pr. & vb.
   n. Convoying.] [F. convoyer, OF. conveier, convoier. See
   Convey.]
   To accompany for protection, either by sea or land; to attend
   for protection; to escort; as, a frigate convoys a
   merchantman.
   [1913 Webster]

         I know ye skillful to convoy
         The total freight of hope and joy.       --Emerson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Convoy \Con"voy\, n. [F. convoi.]
   1. The act of attending for defense; the state of being so
      attended; protection; escort.
      [1913 Webster]

            To obtain the convoy of a man-of-war. --Macaulay.
      [1913 Webster]

   2. A vessel or fleet, or a train or trains of wagons,
      employed in the transportation of munitions of war, money,
      subsistence, clothing, etc., and having an armed escort.
      [1913 Webster]

   3. A protection force accompanying ships, etc., on their way
      from place to place, by sea or land; an escort, for
      protection or guidance.
      [1913 Webster]

            When every morn my bosom glowed
            To watch the convoy on the road.      --Emerson.
      [1913 Webster]

   4. Conveyance; means of transportation. [Obs.] --Shak.
      [1913 Webster]

   5. A drag or brake applied to the wheels of a carriage, to
      check their velocity in going down a hill. --Knight.
      [1913 Webster]

WordNet (r) 3.0 (2006):

convoy
    n 1: a procession of land vehicles traveling together
    2: a collection of merchant ships with an escort of warships
    3: the act of escorting while in transit
    v 1: escort in transit; "the trucks convoyed the cars across the
         battle zone"; "the warships convoyed the merchant ships
         across the Pacific"