内ない湾わんMeanings1nounenclosed bay; inlet; deep bay; basinGeographical term for a bay that is largely surrounded by land, often with a narrow opening to the sea. Used in contexts such as oceanography, geography, and coastal descriptions.See also: 入り海 · 内海東とう京きょう湾わんは典てん型けい的てきな内ない湾わんです。Tokyo Bay is a typical enclosed bay.内ない湾わんの生せい態たい