Source : Webster's Revised Unabridged Dictionary (1913)

Gascon \Gas"con\ (?; F. ?), a. [F.]
   Of or pertaining to Gascony, in France, or to the Gascons;
   also, braggart; swaggering. -- n. A native of Gascony; a
   boaster; a bully. See {Gasconade}.