noun
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
-
flood control in the Missouri basin
• Syn: ↑river basin, ↑basin, ↑watershed, ↑drainage basin, ↑catchment area, ↑catchment basin
• Hypernyms: ↑geographical area, ↑geographic area, ↑geographical region, ↑geographic region
• Hyponyms: ↑detention basin, ↑retention basin
Useful english dictionary. 2012.