Mortar

Mortars were weapons that fired explosive projectiles.

The Fourth Doctor killed a Rutan scout with a makeshift mortar at Fang Rock. (TV: Horror of Fang Rock)

The CyberKing had a mortar launcher on its right arm. (TV: The Next Doctor)

A Roboform dressed as Santa used a mortar disguised as a tuba. (TV: The Christmas Invasion)