Definition of "unpin" [un•pin]

• To remove pins or a pin from. (verb-transitive)
• To open or unfasten by or as if by removing pins. (verb-transitive)
• To free. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "To remove a pinned item, put the mouse cursor back on the file name and click the pushpin icon again to "unpin" it from the list."
• "You can "unpin" music to slide it around, but if you're coming back to a song six times, you need to add the same track six times. iMovie 09 does a lot of things right."
• "Everyone else has a neat, separate grief that they can unpin afterward."