big one

noun

Slang.

1. a one-thousand-dollar bill or the sum of one thousand dollars.

Word History and Origins

Origin of big one¹

First recorded in 1955–60

Example Sentences

Supply is the big one, as the U.S. runs near-record peacetime deficits on top of a bulging current-account deficit.

Read more on The Wall Street Journal

But when it did, it was a big one.

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A big one is that they aren’t subject to required minimum distributions for the original owner, so that money can grow until it’s needed or passed down to heirs.

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Speed: Speed is always a big one.

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Your healthcare costs will only be one expense, but a big one.

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