blue whale blueweed • blue-white · · · Info · Definitions · Synonyms · Characters · · blue whale · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) largest mammal ever known; bluish-grey migratory whalebone whale mostly of southern hemisphere. Synonyms: blue whale, sulfur bottom, Balaenoptera musculus. · · Noun Definition 1 Synonyms · · · sulfur bottom · · Synonym 1 balaenoptera musculus · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C u latin small letter u U+0075 w latin small letter w U+0077