verb (used with object), un·pinned, un·pin·ning.

to remove pins from.
to unfasten or loosen by or as if by removing a pin; detach.

Origin of unpin

1300–50; Middle English unpynnen to unbolt; see un-2, pin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unpin

Historical Examples of unpin

  • He made his way into the ill-lighted sitting-room, and began to unpin his shawl.

    Tiverton Tales

    Alice Brown

  • She seated herself, and began to unpin the travelling veil from her hat.

    The Master Mummer

    E. Phillips Oppenheim

  • He stood watching her unpin her hat before the mirror, and pull at her gloves.


    Leonard Merrick

  • She read it, passed it back, and then began to unpin Joan's hat.

    A Case in Camera

    Oliver Onions

  • She left the window, turned back, and began to unpin her hat.

British Dictionary definitions for unpin


verb -pins, -pinning or -pinned (tr)

to remove a pin or pins from
to unfasten by removing pins
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012