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power nap

American  
[pou-er nap] / ˈpaʊ ər ˌnæp /

noun

  1. a brief sleep during the day, taken for the desired effect of improving one’s alertness and ability to work efficiently throughout the remainder of the day.

    The only thing I have left to do before the presentation is to take a 20-minute power nap.


verb (used without object)

  1. to take a brief sleep during the day in order to improve one’s alertness and ability to work efficiently throughout the remainder of the day.

    Since he started power napping, his midafternoons have become much more productive.

power nap British  

noun

  1. a short sleep taken during the working day with the intention of improving the quality of work later in the day

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of power nap

First recorded in 1980–85