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.
To improve one’s hand to beat another player on the final card in a poker game.
Origin
From Middle English ryver, river, rivere, from Anglo-Norman rivere, from Old French riviere, from Vulgar Latin *rīpāria, from Latin rīpārius, from Latin rīpa, from Proto-Indo-European *h₁reyp-. riviera, and rivière. Displaced native .