Source : Webster's Revised Unabridged Dictionary (1913)

Taunt \Taunt\, a. [Cf. OF. tant so great, F. tant so much, L.
   tantus of such size, so great, so much.] (Naut.)
   Very high or tall; as, a ship with taunt masts. --Totten.

Taunt \Taunt\, v. t. [imp. & p. p. {Taunted}; p. pr. & vb. n.
   {Taunting}.] [Earlier, to tease; probably fr. OF. tanter to
   tempt, to try, for tenter. See {Tempt}.]
   To reproach with severe or insulting words; to revile; to
   upbraid; to jeer at; to flout.

         When I had at my pleasure taunted her.   --Shak.

   Syn: To deride; ridicule; mock; jeer; flout; revile. See
        {Deride}.

Taunt \Taunt\, n.
   Upbraiding language; bitter or sarcastic reproach; insulting
   invective.

         With scoffs, and scorns, and contemelious taunts.
                                                  --Shak.

         With sacrilegious taunt and impious jest. --Prior.

Source : WordNet®

taunt
     n : aggravation by deriding or mocking or criticizing [syn: {twit},
          {taunting}]
     v : harass with persistent criticism or carping; "The children
         teased the new teacher"; "Don't ride me so hard over my
         failure"; "His fellow workers razzed him when he wore a
         jacket and tie" [syn: {tease}, {razz}, {rag}, {cod}, {tantalize},
          {tantalise}, {bait}, {twit}, {rally}, {ride}]