swash·buck·ler 
(swŏshbŭk′lər, swôsh-)
(swŏshbŭk′lər, swôsh-)n.
1. A flamboyant swordsman or adventurer.
2. A sword-wielding ruffian or bully.
3. A dramatic or literary work dealing with a swashbuckler.
[Probably from the striking of bucklers in fighting.]