A large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, oftentimes ending in another body of water, such as an ocean or in an inland sea.
“Occasionally rivers overflow their banks and cause floods.”
Any large flow of a liquid in a single body.
“a river of blood”
verb
To improve one’s hand to beat another player on the final card in a poker game.
“Johnny rivered me by drawing that ace of spades.”