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tr.v. ban·ished, ban·ish·ing, ban·ish·es
1. To force to leave a country or place by official decree; exile: The spy was found guilty of treason and banished from the country.
2. To drive away; expel: We banished all our doubts and fears.
[Middle English banishen, from Old French banir, baniss-, of Germanic origin; see bhā- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
someone who or something which banishes
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014