The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

         When I had at my pleasure taunted her.   --Shak.
   [1913 Webster]

   Syn: To deride; ridicule; mock; jeer; flout; revile. See
        Deride.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Taunt \Taunt\, n.
   Upbraiding language; bitter or sarcastic reproach; insulting
   invective.
   [1913 Webster]

         With scoffs, and scorns, and contemelious taunts.
                                                  --Shak.
   [1913 Webster]

         With sacrilegious taunt and impious jest. --Prior.
   [1913 Webster]

WordNet (r) 3.0 (2006):

taunt
    n 1: aggravation by deriding or mocking or criticizing [syn:
         twit, taunt, taunting]
    v 1: 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, taunt, twit, rally,
         ride]

Moby Thesaurus II by Grady Ward, 1.0:

155 Moby Thesaurus words for "taunt":
   Bronx cheer, Parthian shot, accuse, affront, allege, annoy,
   arraign, article, aspersion, atrocity, back answer, banter,
   barrack, book, brickbat, bring accusation, bring charges,
   bring to book, bug, burlesque, call names, caustic remark, chaff,
   charge, cite, comeback, complain, contempt, contumely, crack, cut,
   cut at, cutting remark, dare, denounce, denunciate, deride,
   derision, despite, dig, dig at, disdain, dishonor, disoblige, dump,
   dump on, enormity, fasten on, fasten upon, finger, fleer, fleer at,
   flout, flouting, foolery, get fresh, get smart, gibe, gibe at,
   gibing retort, give offense to, guy, hang something on, hassle,
   have a nerve, have the cheek, have the gall, hold in contempt,
   humiliate, humiliation, hurl a brickbat, impeach, imply, impute,
   indict, indignity, inform against, inform on, injury, insinuate,
   insult, jab, jab at, jape, jeer, jeer at, jeering, jest, jibe at,
   kid, lampoon, lay charges, leg-pull, lodge a complaint,
   lodge a plaint, lout, make bold, mock, mockery, offend, offense,
   outrage, parting shot, pin on, poke fun at, pooh, pooh-pooh,
   prefer charges, press charges, presume, provoke, put down,
   put on report, put-down, put-on, quip, quiz, rag, rail at, rally,
   rank out, raspberry, razz, report, reproach, revile, rib, ride,
   ridicule, roast, rude reproach, scoff, scoff at, scorn, scout,
   scurrility, short answer, slam, slap, slap at, sneer, sneer at,
   swipe, take liberties, take to task, task, taunt with, tax, tease,
   torment, treat with indignity, twit, uncomplimentary remark,
   upbraid, verbal thrust