send to Coventry

Etymology
Some believe that the phrase dates from the, when a was located in that city. Others say it dates from the 18th century, when was the nearest town to  that lay outside the  of the  and so London s would flee to Coventry to escape.

Verb

 * 1)  To ostracize, or systematically ignore someone.
 * The group decided to send the unpopular members to Coventry.