An example of to shrug is how a person would raise and lower their shoulders to express that they don't know what they want to do.
An example of a shrug is the sleeves that Natalie Portman's character in the movie Black Swan would wear over her leotard when dancing.
- To dismiss or disregard in a carefree way.
Idioms and Phrasal Verbs
Origin of shrug
- Middle English shruggen
From American Heritage Dictionary of the English Language, 5th Edition