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haversack

American  
[hav-er-sak] / ˈhæv ərˌsæk /

noun

  1. a single-strapped bag worn over one shoulder and used for carrying supplies.

  2. a soldier's bag for rations, extra clothing, etc.


haversack British  
/ ˈhævəˌsæk /

noun

  1. a canvas bag for provisions or equipment, carried on the back or shoulder

"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 haversack

1740–50; earlier havresack < French havresac < German Habersack, equivalent to Haber oats (compare dialectal English haver < Old Norse hafrar oats) + Sack sack 1