noun
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
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flood control in the Missouri basin
• Syn: ↑river basin, ↑basin, ↑watershed, ↑catchment area, ↑catchment basin, ↑drainage area
• Hypernyms: ↑geographical area, ↑geographic area, ↑geographical region, ↑geographic region
• Hyponyms: ↑detention basin, ↑retention basin
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noun : basin 2d
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the area drained by a river and all its tributaries. Also called catchment area, drainage area. Cf. watershed (def. 2).
[1880-85, Amer.]
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drainage basin noun
The area of land that drains into one river
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Main Entry: ↑drain
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drainage basin,
the area that is drained by a river and its tributaries.
Useful english dictionary. 2012.