What is another word for eponymous river mouth?
Pronunciation: [ɛpˈɒnɪməs ɹˈɪvə mˈa͡ʊθ] (IPA) 
The term "eponymous river mouth" refers to the location where a river meets the sea, named after the river itself. There are several synonyms for this term, including estuary, river delta, river mouth, and river outlet. An estuary is a partially enclosed coastal body of water where freshwater from a river meets the salt water from the sea. A river delta is a landform that forms at the mouth of a river, where sediment carried by the river's water is deposited and accumulates. A river mouth refers to the point where a river flows into a larger body of water. A river outlet is the place where a river discharges into another body of water, such as a lake or the ocean.
