Dictionary.com
Thesaurus.com

packsack

American  
[pak-sak] / ˈpækˌsæk /

noun

  1. a leather or canvas carrying bag, usually one that can be strapped over the shoulder and used to carry food and personal items when a person is traveling.

packsack British  
/ ˈpækˌsæk /

noun

  1. Also called (in Britain and certain other countries): knapsack.  a bag carried strapped 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 packsack

An Americanism dating back to 1850–55; pack 1 + sack 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.