臼砲 迫撃砲
An indirect fire [[weapon]] that fires explosive projectiles at low velocities, short ranges, and high-arcing ballistic trajectories. With an intention to hit the enemy behind cover. It is typically muzzle-loading and has a barrel length less than 15 times its caliber. 

h4. External links

* "Wikipedia: Mortar (weapon)":[https://en.wikipedia.org/wiki/Mortar_%28weapon%29]
mortar (weapon)