From Longman Dictionary of Contemporary Englishduffel bagduf‧fel bag, duffle bag /ˈdʌfəl bæɡ/ noun [countable]DCCa bag made of strong cloth, with a round bottom and a string around the topExamples from the Corpusduffel bag• It took more effort to carry a duffel bag than I had ever en-countered before.• Clairol 6 Everything for the beach ... Islander beach duffel bag, 10ドル.99.• She stuffed her toyfox into her duffel bag but allowed his head to peep out.• I stepped on to the reef, reached for my duffel bag, and lofted it to my shoulder.• The bed was made, and I saw my duffel baglying on it.• It looked like that duffel bag of yours, and it was heavy.