envelope
A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
Other meanings
Something that envelops; a wrapping.
A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.
Kinds of envelope
- window envelope
Word history
From French "enveloppe".
Where this comes from
This definition is adapted from “envelope” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.