rapier
Definitions
A slender, sharp-pointed sword used primarily for thrusting.
Something characterized by sharpness or quickness, often used to describe wit or intellect.
Examples
The duelist drew his rapier with a swift, practiced motion.
Her wit was as sharp as a rapier, cutting through the tension in the room.
The museum displayed an ornate 17th-century rapier with an intricately carved hilt.