shrug

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To raise (the shoulders), especially as a gesture of doubt, disdain, or indifference.
2. v. To raise the shoulders, especially as a gesture of doubt, disdain, or indifference.
3. n. An expressive gesture of raising the shoulders.
4. n. A woman's short jacket or sweater open down the front.
5. shrug off To minimize the importance of: shrugged off the defeat and talked about tonight's game.
6. shrug off To get rid of: shrug off a burden.
7. shrug off To wriggle out of (clothing).

Century Dictionary and Cyclopedia

1. To shrink or shiver with or as with cold; draw up the limbs in a nervous shiver.
2. To raise or draw up and contract the shoulders with a sudden, nervous movement: an expression usually of doubt, indifference, discontent, dislike, contempt, etc.
3. Reflexively, to draw up the shoulders of in a shrug.
4. To draw up with a sudden, nervous movement; contract in a shrug.
5. n. An expressive drawing up of the shoulders: a characteristic manner of expressing doubt, indifference, discontent, contempt, etc., or, rarely, relief or resignation.
6. n. A hitching up of the clothes.

Wiktionary

1. n. A lifting of the shoulders to signal indifference.
2. n. A cropped, cardigan-like garment with short or long sleeves, typically knitted.
3. v. intransitive To raise the shoulders to express a lack of knowledge or certainty.
4. v. intransitive To raise the shoulders to express a lack of concern or worry.

GNU Webster's 1913

1. v. To draw up or contract (the shoulders), especially by way of expressing doubt, indifference, dislike, dread, or the like.
2. v. To raise or draw up the shoulders, as in expressing doubt, indifference, dislike, dread, or the like.
3. n. A gesture consisting of drawing up the shoulders, -- a motion usually expressing doubt, indifference, or dislike; -- it is sometimes accompanied by a slight turning of the hands outward or upward. Such a gesture may be made, as in answering "who knows" to a question, suggesting utter ignorance of an answer and a disinclination to pursue the topic further.

WordNet 3.0

1. v. raise one's shoulders to indicate indifference or resignation
2. n. a gesture involving the shoulders