Source : Webster's Revised Unabridged Dictionary (1913)

Passant \Pas"sant\, a. [F., p. pr. of passer. See {Pass}, v. i.]
   1. Passing from one to another; in circulation; current.
      [Obs.]

            Many opinions are passant.            --Sir T.
                                                  Browne.

   2. Curs?ry, careless. [Obs.]

            On a passant rewiew of what I wrote to the bishop.
                                                  --Sir P. Pett.

   3. Surpassing; excelling. [Obs.] --Chaucer.

   4. (Her.) Walking; -- said of any animal on an escutcheon,
      which is represented as walking with the dexter paw
      raised.

Source : WordNet®

passant
     adj : in walking position with right foreleg raised [syn: {passant(ip)}]