mod. available for anyone; not yet claimed. : I don't know who will get it. It's up for grabs.
mod. in total chaos. : When the market crashed, the whole office was up for grabs.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Available to anyone, as in Now that he's resigned, his job is up for grabs. This term alludes to something being thrown in the air for anyone to grasp or catch. [Colloquial; 1920s]
