river
n. countable A1 Beginner Oxford US //ˈɹɪvɝ// riv·er
n. a large, natural flow of water that moves across land toward the sea or a lake.
n. a large natural stream of water flowing in a channel to the sea, a lake, or another such stream.
The river flows through the center of the city.
Many people enjoy walking along the river bank on sunny afternoons to watch the boats pass by.
Heavy rainfall in the mountains caused the river to burst its banks, flooding the surrounding farmland and forcing local residents to evacuate their homes.
Usage
Commonly used with the definite article 'the' when referring to a specific geographic feature.