1 (especially BrE) = WASHBASIN
2 a large round bowl for holding liquids or (in British English) for preparing foods in; the amount of liquid, etc. in a basin:
a pudding basin
3 an area of land around a large river with streams running down into it:
the Amazon Basin
4 (technical) a place where the earth's surface is lower than in other areas of the world:
the Pacific Basin
5 a sheltered area of water providing a safe harbour for boats:
a yacht basin
