trench mortar trench knife • trench mouth · · · Info · Definitions · Synonyms · Characters · · trench mortar · · Text Common · · Latin · · Scripts 13 · · Length 3 · · Syllables Definitions · · · (noun) a muzzle-loading high-angle gun with a short barrel that fires shells at high elevations for a short range. Synonyms: mortar, howitzer, trench mortar. · · Noun Definition 1 Synonyms · · · mortar · · Synonym 1 howitzer · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074