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a. An open, shallow, usually round container used especially for holding liquids.
b. The amount that such a vessel can hold.
2. A washbowl; a sink.
a. A body of water that is connected to the sea and is partially or almost completely enclosed by land.
b. A small body of water that is artificially enclosed.
4. See watershed.
a. A broad tract of land in which the rock strata are tilted toward a common center.
b. A large, bowl-shaped depression in the surface of the land or ocean floor.
[Middle English, from Old French bacin, from Vulgar Latin *baccīnum, from *baccus, container, of Celtic origin.]
ba′sined (-sĭnd) adj.