mortar noun
ADJ. heavy They could not move their heavy mortars over the swampy ground.
VERB + MORTAR be armed with, have Their troops were armed with mortars and machine guns. | fire
MORTAR + VERB burst, explode The occasional mortar burst near our truck. | hit sth
MORTAR + NOUN attack, fire We were under constant mortar fire. | bomb, shell hit by a mortar shell
You can also check other dicts: mortar (English, 中文解释 ), wordnet sense, Collins Definition