The story
A genericization of the brand name Duo-Tang.
Etymology from Wiktionary, CC BY-SA 4.0.
duotang
Today it means: A type of folder with three prongs that is commonly used to store papers in elementary school settings. Full definition →
Today it means: A type of folder with three prongs that is commonly used to store papers in elementary school settings. Full definition →
A genericization of the brand name Duo-Tang.
Etymology from Wiktionary, CC BY-SA 4.0.