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vac

American  
[vak] / væk /

noun

Informal.
  1. vacuum cleaner.


vac British  
/ væk /

noun

  1. informal short for vacation

"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 vac

By shortening

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