The Collaborative International Dictionary of English v.0.48:

Gasconade \Gas`con*ade"\, n. [F. gasconnade, from Gascon an
   inhabitant of Gascony, the people of which were noted for
   boasting.]
   A boast or boasting; a vaunt; a bravado; a bragging;
   braggodocio. --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gasconade \Gas`con*ade"\, v. i. [imp. & p. p. Gasconaded; p.
   pr. & vb. n. Gasconading.]
   To boast; to brag; to bluster.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gasconade
    n 1: an instance of boastful talk; "his brag is worse than his
         fight"; "whenever he won we were exposed to his gasconade"
         [syn: brag, bragging, crow, crowing, vaporing,
         line-shooting, gasconade]
    v 1: show off [syn: boast, tout, swash, shoot a line,
         brag, gas, blow, bluster, vaunt, gasconade]