To send (someone) away and forbid them from returning.
He was banished from the kingdom for his crimes.
2
To expel, especially from the mind.
to banish fear; to banish a qualm
Word Origin
From Middle English banysshen, from Old French banir (“to proclaim, ban, banish”) and Old English bannan, from Proto-Germanic *bannaną (“curse, forbid”). Compare French bannir. Doublet of ban.