swashbuckler

noun

1. A swordsman or fencer who engages in showy or extravagant swordplay.

   “Phillips, in his New World of Words defines, to swash, to make fly about; to clash, or make a noise with swords; and a swash-buckler, a vain glorious sword player or fencer, a meer braggadochoe, a vapouring fellow.”

2. A daring adventurer.
3. A kind of period adventure story with flashy action and a lighthearted tone.