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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
Oxford Collocations Dictionary