(1):
(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.
(2):
(v. t.) To thrust into, penetrate, or transfix, with a pointed instrument.
(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.