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- An extra check or verification made a second time, usually with additional caution or attention.
- Why don't you make another double check of the house to see if there are still rats around?
- (chess, uncountable) A check delivered by two pieces simultaneously.
- To check again; to check with extra caution or attention; to verify or make sure.
- I'm pretty sure that he's not coming, but I can double check the guest list.