lagoon

noun
1
a lake of salt water that is separated from the sea by a reef or an area of rock or sand
تالاب, لاگون, تالاب حائل
2
a small area of fresh water near a lake or river
تالاب, آبگیر
We loved to go swimming in the lagoon.
3
an artificial area built to hold waste water before it is treated at a sewage works
آبگیر فاضلاب, تالاب تصفیه فاضلاب