/ ˈbeɪsn; NAmE / noun
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
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WORD ORIGIN
Middle English : from Old French bacin , from medieval Latin bacinus , from bacca water container, perhaps of Gaulish origin.