River (noun)

1. A large natural stream of water flowing in a channel to the sea, a lake, or another such stream.
2. A long thin stretch of water, such as a canal.
3. A large amount of something that flows or pours out continuously.
4. A figurative reference to a flow of something.
5. A large stream of water that flows through a channel in the earth's surface, usually to the sea.

Origin:

Old english rīfer, of germanic origin; related to dutch rivier and german fluß, based on an indo-european root shared by latin ripa "bank", rivus "stream".

Examples:

1. The river flowed calmly through the valley.
2. He liked to fish in the river.
3. A river of tears flowed down her face.
4. The river of time flows on.
5. The river was swollen with the heavy rain.