Meaning of “banish” - Learner’s Dictionary

banish

verb [ T ] uk us /ˈbænɪʃ/
SEND AWAY

to send someone away from a place, often as a punishment:

[ often passive ] He was banished to a remote Alaskan island.
Smokers were banished to the garden.
FEELING

to make yourself stop thinking about something or feeling a particular way:

Banish winter blues with a holiday in the sun!

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