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slang Someone who is apt to boo, typically at a sporting event. That questionable call against the home team has brought the boo-birds out in full force.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a person who boos frequently at games or other public events. The catcher turned and stared right at the loudmouthed boo-bird. Everybody knew what he was thinking.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.