'Rushbuckler' definitions:

Definition of 'Rushbuckler'

From: GCIDE

Rushbuckler \Rush"buc`kler\, n. A bullying and violent person; a braggart; a swashbuckler. [Obs.] [1913 Webster]
That flock of stout, bragging rushbucklers. --Robynson (More's Utopia). [1913 Webster]