Source : Webster's Revised Unabridged Dictionary (1913)

Vaunt \Vaunt\, v. i. [imp. & p. p. {Vaunted}; p. pr. & vb. n.
   {Vaunting}.] [F. vanter, LL. vanitare, fr. L. vanus vain. See
   {Vain}.]
   To boast; to make a vain display of one's own worth,
   attainments, decorations, or the like; to talk
   ostentatiously; to brag.

         Pride, which prompts a man to vaunt and overvalue what
         he is, does incline him to disvalue what he has. --Gov.
                                                  of Tongue.

Vaunt \Vaunt\, v. t.
   To boast of; to make a vain display of; to display with
   ostentation.

         Charity vaunteth not itself, is not puffed up. --1 Cor.
                                                  xiii. 4.

         My vanquisher, spoiled of his vaunted spoil. --Milton.

Vaunt \Vaunt\, n.
   A vain display of what one is, or has, or has done;
   ostentation from vanity; a boast; a brag.

         The spirits beneath, whom I seduced With other promises
         and other vaunts.                        --Milton.

Vaunt \Vaunt\, n. [F. avant before, fore. See {Avant},
   {Vanguard}.]
   The first part. [Obs.] --Shak.

Vaunt \Vaunt\, v. t. [See {Avant}, {Advance}.]
   To put forward; to display. [Obs.] ``Vaunted spear.''
   --Spenser.

         And what so else his person most may vaunt. --Spenser.

Source : WordNet®

vaunt
     n : extravagant self-praise
     v : show off [syn: {boast}, {tout}, {swash}, {shoot a line}, {brag},
          {gas}, {blow}, {bluster}, {gasconade}]