A wide, natural stream of fresh water that flows into an ocean or other large body of water and is usually fed by smaller streams, called tributaries, that enter it along its course. A river and its tributaries form a drainage basin, or watershed, that collects the runoff throughout the region and channels it along with erosional sediments toward the river. The sediments are typically deposited most heavily along the river's lower course, forming floodplains along its banks and a delta at its mouth.
Idioms and Phrases with sell down the river (1 of 2)
sell down the river
Betray, as in They kept the merger a secret until the last minute, so the employees who were laid off felt they'd been sold down the river. This expression, dating from the mid-1800s, alludes to slaves being sold down the Mississippi River to work as laborers on cotton plantations. Its figurative use dates from the late 1800s.
Idioms and Phrases with sell down the river (2 of 2)