bum's rush definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Forcible ejection from a place.
bum's rush - Phrases/Idioms
Forcible ejection, abrupt dismissal. For example, When Henry started shouting, the bouncer gave him the bum's rush, or Within hours of being fired, Alice was given the bum's rush. This idiom uses bum in the sense of “a vagrant or tramp.” [Slang; early 1900s]