Definition of pierce

• v. t. - To thrust into, penetrate, or transfix, with a pointed instrument.
• v. t. - To penetrate; to enter; to force a way into or through; to pass into or through; as, to pierce the enemy's line; a shot pierced the ship.
• v. t. - Fig.: To penetrate; to affect deeply; as, to pierce a mystery.
• v. i. - To enter; to penetrate; to make a way into or through something, as a pointed instrument does; -- used literally and figuratively.