とうかい 東海 Common word LinksSentence search for 東海Sentence search for とうかいKanji details for 東 and 海Edit in JMdict Noun1. Tōkai region (of Honshu; incl. Aichi, Shizuoka, Mie and southern Gifu prefectures)See also 東海地方Noun2. eastern seaNoun3. Tōkaidō (Edo-period Edo-Kyoto highway)Abbreviation, Historical term, See also 東海道Noun4. JapanPoetical term, Archaic Discussions Log in to talk about this word.