Dictionary/海道かいどうKaidou海道 (Kaidou) is a Japanese noun meaning “sea route”.Meaningsnounsea routeKanji in 海道海sea道road-wayRelated words道road酷いcruel海sea海外foreign海豚dolphin (or other small toothed whales, incl. porpoises, belugas, etc.)道具tool報道report (of news)海老prawn北海道Hokkaido (island, prefectural-level administrative unit)酷くterribly内海inland sea道場dojo