hydrographic feature inlet An opening of the sea into the land, or of a lake into its shore. ENVO ENVO:00000475 EcoLexicon:inlet FTT:233 FTT:463 Geonames:H.GULF Geonames:H.INLT INLET Inlet SWEETRealm:Inlet TGN:21128 Wikipedia:Inlet anse arm bay bight channel closed bay firth gulf inlet ria