A light simple mortar designed to propel a bomb into enemy trenches.
- The sounds of fighting never abated; even the infrequent spells of calm were interrupted by the occasional bored firing of a rifle or a trench mortar or an Army machine gun.
- We captured a trench mortar, a machine gun and some material.
- The closest Wood got to combat was the inspection tour, during which a trench mortar exploded at the breach, slightly wounding him and killing several officers who stood nearby.
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Syllabification: trench mor·tar
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