blouse

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

• noun A woman's or child's loosely fitting shirt that extends to the waist or slightly below.
• noun A loosely fitting garment resembling a long shirt, worn especially by European workmen.
• noun The service coat or tunic worn by the members of some branches of the US armed forces.
• intransitive & transitive verb To hang or cause to hang loosely and fully.

from The Century Dictionary.

• noun A light loose upper garment, made of linen or cotton, worn by men as a protection from dust or in place of a coat. A blue linen blouse is the common dress of French workingmen.
• noun A loosely fitting dress-body worn by women and children.

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

• noun A light, loose over-garment, like a smock frock, worn especially by workingmen in France; also, a loose coat of any material, as the undress uniform coat of the United States army.

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

• noun An outer garment, usually loose, that is similar to a shirt and reaches from the neck to the waist or below. Nowadays, in colloquial use, blouse refers almost always to a woman's shirt that buttons down the front.
• noun military A loose-fitting uniform jacket.
• verb To hang a garment in loose folds.
• verb military To tuck one's pants/trousers (into one's boots).

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

• noun a top worn by women