trench knife trench gun • trench mortar · · · Info · Definitions · Characters · · trench knife · · Text Common · · Latin · · Scripts 12 · · Length 2 · · Syllables Definitions · · · (noun) a knife with a double-edged blade for hand-to-hand fighting. Synonyms: trench knife. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 k latin small letter k U+006B n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074