Source : Webster's Revised Unabridged Dictionary (1913)

Marvel \Mar"vel\, n. [OE. mervaile, F. merveille, fr. L.
   mirabilia wonderful things, pl., fr. mirabilis wonderful, fr.
   mirari to wonder or marvel at. See {Admire}, {Smile}, and cf.
   {Miracle}.]
   1. That which causes wonder; a prodigy; a miracle.

            I will do marvels such as have not been done. --Ex.
                                                  xxxiv. 10.

            Nature's sweet marvel undefiled.      --Emerson.

   2. Wonder. [R.] ``Use lessens marvel.'' --Sir W. Scott.

   {Marvel of Peru}. (Bot.) See {Four-o'clock}.

Marvel \Mar"vel\, v. i. [imp. & p. p. {Marveled}or {Marvelled};
   p. pr. & vb. n. {Marveling} or {Marvelling}.] [OE. merveilen,
   OF. merveillier.]
   To be struck with surprise, astonishment, or wonder; to
   wonder.

         Marvel not, my brethren, if the world hate you. --1
                                                  john iii. 13.

Marvel \Mar"vel\, v. t.
   1. To marvel at. [Obs.] --Wyclif.

   2. To cause to marvel, or be surprised; -- used impersonally.
      [Obs.]

            But much now me marveleth.            --Rich. the
                                                  Redeless.

Source : WordNet®

marvel
     n : something that causes feelings of wonder; "the wonders of
         modern science" [syn: {wonder}]
     [also: {marvelling}, {marvelled}]

marvel
     v 1: be amazed at; "We marvelled at the child's linguistic
          abilities" [syn: {wonder}]
     2: express astonishment or surprise about something
     [also: {marvelling}, {marvelled}]