Any of various similar coverings.
The definition of a cover is something that goes over, rests on the surface or provides a place to hide.
An outer covering or casing, especially:
A flat paper container, especially for a letter, usually having a gummed flap.
Find another word for sleeve. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for sleeve, like: sleeves, sheath, cover, pleat, strap, jacket, sleave, arm, cuff, envelope and neckband.