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To near the end of a supply of something. We're running low on paper towels right now, so use them judiciously.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
run low (on something)
to near the end of a supply of something. We are running low on salt. It's time to buy more. The car is running low on gas.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
be/run ˈlow (on something)not have much of something left: We’re running low on fuel. Do you think we’ll have enough to get home?
Farlex Partner Idioms Dictionary © Farlex 2017