to thrust into, penetrate, or transfix, with a pointed instrument.-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.-fig.: to penetrate; to affect deeply; as, to pierce a mystery.-to enter; to penetrate; to make a way into or through something, as a pointed instrument does; -- used literally and figuratively.