—n.en-vel'up, en'vu-lup, än'-), [key]
—v., -oped, -op•ing.
1. to wrap up in or as in a covering: The long cloak she was wearing enveloped her completely.
2. to serve as a wrapping or covering for, as a membrane of an organ or a sheath.
3. to surround entirely.
4. Mil.to attack (an enemy's flank).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.