Dictionary
es•tu•ar•y
Pronunciation: (es'chOO-er"ē), [key]—
n.,
—pl. -ar•ies.
1. that part of the mouth or lower course of a river in which the river's current meets the sea's tide.
2. an arm or inlet of the sea at the lower end of a river.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.