trench mortar is a noun meaning "a muzzle-loading high-angle gun with a short barrel that fires shells at high elevations for a short range". It carries one recorded sense.
a muzzle-loading high-angle gun with a short barrel that fires shells at high elevations for a short range
Definitions, synonyms and semantic relations for trench mortar come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.