drainage basinnoun [ C ]
uk/ˈdreɪ.nɪdʒ ˌbeɪ.sən/us/ˈdreɪ.nɪdʒ ˌbeɪ.sən/specializedan area of land from which the rain flows into a particular river or lake, etc.
Thesaurus: synonyms and related words
Parts of watercourses
- artesian well
- basin
- branch
- confluence
- delta
- estuary
- firth
- geyser
- head
- lock
- lock-keeper
- meander
- midstream
- mooring
- reach
- spring
- towpath
- tributary
- water table
- weir
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Examples from literature
- Its drainage basin, including in this its own area, is estimated to be about five hundred square miles.