A large artillery gun or one of the largest-caliber naval guns (as on a battleship).
A person, group, thing, or course of action that is powerful, influential, or particularly effective.
A cannon that combines certain characteristics of field guns and mortars, delivering projectiles with medium velocities, usually with relatively high trajectories; normally a cannon with a tube length of 20 to 30 calibers.
A powerfully hit shot.
To attack with a howitzer.