The Collaborative International Dictionary of English v.0.48:

Braggart \Brag"gart\, n. [OF. bragard flaunting, vain, bragging.
   See Brag, v. i.]
   A boaster.
   [1913 Webster]

         O, I could play the woman with mine eyes,
         And braggart with my tongue.             --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Braggart \Brag"gart\, a.
   Boastful. -- Brag"gart*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

braggart
    adj 1: exhibiting self-importance; "big talk" [syn: boastful,
           braggart(a), bragging(a), braggy, big, cock-a-
           hoop, crowing, self-aggrandizing, self-
           aggrandising]
    n 1: a very boastful and talkative person [syn: bragger,
         braggart, boaster, blowhard, line-shooter,
         vaunter]