estuary [estuaries](place where ocean tides and river water merge) noun [UK: ˈes.tʃʊə.ri] [US: ˈes.tʃuː.ˌe.ri]Because of tides, the water levels in an estuary are going up and down several times a day. = A causa delle maree, i livelli dell'acqua in un estuario vanno su e giù più volte al giorno.
inlet [inlets](body of water let into a coast) noun [UK: ˈɪn.let] [US: ˈɪn.ˌlet]