"basin" in the noun sense
a bowl-shaped vessel usually used for holding food or liquids
"she mixed the dough in a large basin"
2. basin, basinful
the quantity that a basin will hold
"a basinful of water"
a natural depression in the surface of the land often with a lake at the bottom of it
"the basin of the Great Salt Lake"
4. river basin, basin, watershed, drainage basin, catchment area, catchment basin, drainage area
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"
5. washbasin, basin, washbowl, washstand, lavatory
a bathroom sink that is permanently installed and connected to a water supply and drainpipe where you can wash your hands and face
"he ran some water in the basin and splashed it on his face"
Source: WordNet® (An amazing lexical database of English)
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