honshu honours list • hontish · · · Info · Definitions · Characters · · honshu · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (noun) the central and largest of the four main islands of Japan; between the Sea of Japan and the Pacific Ocean; regarded as the Japanese mainland. Synonyms: Honshu, Hondo. · · Noun Definition 1 Characters · · h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075