trunk route trunk room • trunks · · · Info · Definitions · Synonyms · Characters · · trunk route · · Text Common · · Latin · · Scripts 11 · · Length 2 · · Syllables Definitions · · · (noun) line that is the main route on a railway. Synonyms: trunk line, trunk route. · · Noun Definition 1 Synonyms · · · trunk line · · Synonym 1 Characters · · space U+0020 e latin small letter e U+0065 k latin small letter k U+006B 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 u latin small letter u U+0075