Meaning of “basin” - Learner’s Dictionary

basin

noun [ C ] uk us /ˈbeɪsən/
BOWL mainly UK

a bowl for liquids or food:

a basin of water
BATHROOM mainly UK (UK/US sink)

B1 the bowl that is fixed to the wall in a bathroom, where you can wash your hands and face

LAND

a low area of land from which water flows into a river

(Definition of “basin” from the Cambridge Learner’s Dictionary © Cambridge University Press)