a large, cylindrical bag, especially of canvas, for carrying personal belongings, orginally used by military personnel.
Origin of duffel bag
An Americanism dating back to 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for duffel bag
a cylindrical drawstring canvas bag, originally used esp by sailors for carrying personal articles
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