Rapier
From Memory Alpha, the free Star Trek reference
A rapier is a sharpened, pointed, thin sword, used for attack and defense.
In Reginald Barclay's holodeck version of The Three Musketeers, the characters played by Data, Captain Picard, Geordi La Forge, and Commander Riker used rapiers for their sword fight with Barclay. (TNG: "Hollow Pursuits")
Data kept a rapier in his quarters, stored in a shelf. (TNG: "Timescape")
Captain Kathryn Janeway also kept a rapier in her quarters. It was located on her dresser along side one of her reading chairs. (VOY: "Persistence of Vision")
