big one

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big one

1. Something very important that one has been working or striving to achieve or win. Used after "the." OK, boys, this is the big one—the regional championships. Today we put our months of hard work to the test. This deal is the big one. Our company's entire future depends on us securing it.
2. Something extremely catastrophic or devastating. Used after "the." Analysts are warning that the destruction caused by the recent earthquakes would pale in comparison to the big one that could be coming down the line. It was only a minor heart attack, thank God, but the doctors say he might not survive if he's ever struck by the big one.
3. slang A unit of one thousand dollars. Used in plural constructions. The landscaper said it would cost five big ones to replace the sprinkler system. I spent 30 big ones on this damned car, and it's given me nothing but trouble since the day I bought it.
See also: big, one
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

the big one

n. a serious heart attack, possibly fatal, especially if anticipated or dreaded. He survived the big one but kept on smoking.
See also: big, one
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
Each setting begins with a small dune rear-ending a big one. In the solitonlike case, wind dumps sand on the rear dune while shrinking the forward one.
Small companies are less thoroughly researched than big ones, so you have a better chance of finding a bargain.
Small bubbles are good and portend health or fortune, but the big ones are a bad sign.
We'll just take a look at the big ones -- the ones that were supposed to revolutionize the way companies do business.
The more fit an individual is, the lower his risk of dying from a large number of causes--cancer and coronary disease, just to name two big ones. Being fit protects us in many ways.
For me they are obviously to win the big ones - and the big ones are the majors.
I would need to take my Timberlands off to count the other "big ones".
Flora is the youngest of the "big ones," the upper grades in the local school, and struggles with the attitudes and interests of the older children.
Small ones swing in clocks in our homes, and big ones sway slowly in great halls of museums.
The large spheres would behave in the same way, but outnumbered by small particles bent on maximizing their own freedom, the big ones remain pinned to the glass surface like wallflowers at a raucous high school dance.
Of the Japanese land and sea events, he says, "Big ones are associated with big ones, but smaller land earthquakes may or may not trigger ones at sea." However, he adds, the sum effect of strain pulses from a few smaller onshore earthquakes occurring over several years can initiate a subduction-zone quake.