megabuck

[meg-uh-buhk] /ˈmɛg əˌbʌk/
noun, Informal.
1.
one million dollars.
2.
megabucks, very large sums of money.
Origin
1945-50; mega- + buck1
British Dictionary definitions for megabucks

megabuck

/ˈmɛɡəˌbʌk/
noun
1.
(US & Canadian, slang)
  1. a million dollars
  2. (as modifier): a megabuck movie
Word Origin and History for megabucks
n.

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.

Slang definitions & phrases for megabucks

megabucks

noun

(also megageeters) Much money, literally, ''millions of dollars'' •Megabuck, ''a million dollars,'' was coined by nuclear scientists in 1946, but the plural form was not popularized until the 1960s and '70s: the simple faith that moves mountains and grosses megabucks/ He was doing okay, but she's got megabucks of her own/ after two years on the road you'll be knocking down megageeters (1946+)