Definitions
There is 1 meaning of the phrase
Drainage Basin.
Drainage Basin - as a noun
The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
Example: "Flood control in the missouri basin"
Synonyms (Exact Relations)
basin7catchment areacatchment basindrainage areariver basinwatershed16Hypernyms (Closely Related)
geographic areageographic regiongeographical areageographical regionHyponyms (Broadly Related)