sewer main sewer line • sewer pipe · · · Info · Definitions · Synonyms · Characters · · sewer main · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a main in a sewage system. Synonyms: sewer main, sewer line. · · Noun Definition 1 Synonyms · · · sewer line · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 w latin small letter w U+0077