Top definition
Stiff, usually cardboard-backed envelope used for sending thin, and often valuable, items such as certificates and photographs that need to be protected from damage. These envelopes are usually embellished with the words "Do Not Bend". Synonyms: do not bend envelope, board-backed envelope.
They posted my diploma in a donotbendelope and it arrived in pristine condition.
by Wordmaiden March 28, 2017
Get the mug
Get a donotbendelope mug for your father-in-law Trump.