unpin

Verb

unpin (third-person singular simple present unpins, present participle unpinning, simple past and past participle unpinned)

1. (transitive) To unfasten by removing a pin.
   • Lady Bellaston answered with a smile, “Then you have seen this terrible man, madam; pray, is he so very fine a figure as he is represented? for Etoff entertained me last night almost two hours with him. The wench I believe is in love with him by reputation.” Here the reader will be apt to wonder...1749, Henry Fielding, The History of Tom Jones, a Foundling
2. (transitive) To detach (an icon, application, etc.) from the place where it was previously pinned.
   • to unpin a program from the Taskbar
3. (transitive) To undo the pinning or fixing of (an array in memory, a security certificate, etc.) so that it can be modified again.
   • […] you can use the GCHandle class mentioned earlier to pin a heap block until you explicitly unpin it.2012, Ian Griffiths, Programming C# 5.0, page 244
4. (transitive) To get (a piece) out of a pin.