mortar
n//ˈmɔːtə(ɹ)//murbruk, mortel, mörsare, granatkastare
(uncountable) A mixture of lime or cement, sand and water used for bonding building blocks.
(countable) A hollow vessel used to pound, crush, rub, grind or mix ingredients with a pestle.
(countable, military, historical) A short, heavy, large-bore cannon designed for indirect fire at very steep trajectories.
(countable, military) A relatively lightweight, often portable indirect fire weapon which transmits recoil to a base plate and is designed to lob explosive shells at very steep trajectories. [from 20th c.]