2. (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.
3. (v. t.) Fig.: To penetrate; to affect deeply; as, to pierce a mystery.
4. (v. i.) To enter; to penetrate; to make a way into or through something, as a pointed instrument does; -- used literally and figuratively.