break the bank
Ruin one financially, exhaust one’s resources, as in I guess the price of a movie won’t break the bank. This term originated in gambling, where it means that a player has won more than the banker (the house) can pay. It also may be used ironically, as above. [c. 1600]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. Related Words for break the bank upgrade, develop, raise, boost, grow, improve, prosper, magnify, grade, prefer, enlarge, up, elevate, multiply, uplift, thrive, score