Is “River” a Scrabble word?

1.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.”

2.Any large flow of a liquid in a single body.

“a river of blood”

3.The last card dealt in a hand.

1.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.”