keep tabs on


Observe carefully, keep a record of. For example, I hate having my boss keep tabs on my every move, or We've got to keep tabs on outgoing mail so we can keep track of postage. This expression uses to tab in the sense of “an account.” [Late 1800s] Also see keep track.

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CAN YOU GUESS THESE WORDS FROM AROUND THE US?

American English is not always as it appears to be ... get to know regional words in this quiz!
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A bet is synonymous with a wager, but what does it mean in New York?
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.