Duo-Tang
التعريفات والمعاني
== English ==
=== Alternative forms ===
duotang, duo-tang
=== Etymology ===
From the trademark Duo-Tang, registered in 1962 by the Duo-Tang company.
=== Noun ===
Duo-Tang (plural Duo-Tangs)
(Canada, genericized trademark) A folder with flexible metal fasteners.