Dictionary/内海ないかいNaikaiAlso read: うちうみ内海 (Naikai) is a Japanese noun meaning “inland sea, inlet, gulf, bay”.Meaningsnouninland sea; inlet; gulf; baynounlakeKanji in 内海内inside海seaRelated words内inside内within ...区内in a ward海sea内科internal medicine内容contents海外foreign案内guidance内緒secrecyその内before very long海豚dolphin (or other small toothed whales, incl. porpoises, belugas, etc.)この内among these