megabuck

[meg-uh-buhk]

noun Informal.

one million dollars.

megabucks, very large sums of money.

Origin of megabuck

First recorded in 1945–50; mega- + buck¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for megabucks

megabuck

noun

US and Canadian slang

a million dollars
(as modifier)a megabuck movie

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for megabucks

1946, originally "one million dollars," from mega- in the scientific sense + slang buck (n.) "dollar." A jocular coinage of U.S. scientists working on expensive atomic research.