wrapper

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun That in which an object is wrapped or covered, as.
• noun The material, such as paper, in which something is wrapped.
• noun The material encircling a magazine or newspaper sent by mail.
• noun A book jacket.
• noun The tobacco leaf covering a cigar.
• noun A loose dressing gown or negligee.
• noun One that wraps, as a store employee who wraps parcels.

from The Century Dictionary.

• noun One who wraps.
• noun That in which anything is wrapped or inclosed; an outer covering: as, newspaper wrappers.
• noun Specifically
• noun The loose and detachable cover of paper put about a book bound in cloth to preserve its freshness; sometimes, incorrectly, the sewed or pasted cover of a pamphlet.
• noun Tobacco-leaf specially suited or prepared for covering cigars: distinguished from filler. See filler, 4.
• noun A loose garment meant to envelop the whole, or nearly the whole, person: applied to both indoor and outdoor garments, such as dressing-gowns, overcoats, and shawls.
• noun An undershirt.
• noun In Fungi, same as volva.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who, or that which, wraps.
• noun That in which anything is wrapped, or inclosed; envelope; covering.
• noun Specifically, a loose outer garment; an article of dress intended to be wrapped round the person

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One who, or that which, wraps.
• noun Something that is wrapped around something else as a cover or protection: a wrapping.
• noun A negligée or loose dressing gown.
• noun computing A construct, such as a class or module, that serves to mediate access to another.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the covering (usually paper or cellophane) in which something is wrapped
• noun a loose dressing gown for women
• noun cloak that is folded or wrapped around a person