Source : Webster's Revised Unabridged Dictionary (1913)

Brag \Brag\, v. i. [imp. & p. p. {Bragged}; p. pr. & vb. n.
   {Bragging}.] [OE. braggen to resound, blow, boast (cf. F.
   braguer to lead a merry life, flaunt, boast, OF. brague
   merriment), from Icel. braka to creak, brak noise, fr. the
   same root as E. break; properly then, to make a noise, boast.
   ?{95}.]
   To talk about one's self, or things pertaining to one's self,
   in a manner intended to excite admiration, envy, or wonder;
   to talk boastfully; to boast; -- often followed by of; as, to
   brag of one's exploits, courage, or money, or of the great
   things one intends to do.

         Conceit, more rich in matter than in words, Brags of
         his substance, not of ornament.          --Shak.

   Syn: To swagger; boast; vapor; bluster; vaunt; flourish; talk
        big.

Source : WordNet®

bragging
     adj : exhibiting self-importance; "big talk" [syn: {boastful}, {braggart(a)},
            {bragging(a)}, {braggy}, {big}, {cock-a-hoop}, {crowing},
            {self-aggrandizing}, {self-aggrandising}]
     n : an instance of boastful talk; "his brag is worse than his
         fight"; "whenever he won we were exposed to his
         gasconade" [syn: {brag}, {crow}, {crowing}, {vaporing}, {line-shooting},
          {gasconade}]

brag
     adj : exceptionally good; "a boss hand at carpentry"; "his brag
           cornfield" [syn: {boss}]
     [also: {bragging}, {bragged}]

brag
     n : an instance of boastful talk; "his brag is worse than his
         fight"; "whenever he won we were exposed to his
         gasconade" [syn: {bragging}, {crow}, {crowing}, {vaporing},
          {line-shooting}, {gasconade}]
     v : show off [syn: {boast}, {tout}, {swash}, {shoot a line}, {gas},
          {blow}, {bluster}, {vaunt}, {gasconade}]
     [also: {bragging}, {bragged}]

bragging
     See {brag}