Word Study
unpin
CIDE DICTIONARY
unpin, v. t. [1st pref. un- + pin.].
To loose from pins; to remove the pins from; to unfasten; as, to unpin a frock; to unpin a frame. [1913 Webster]
OXFORD DICTIONARY
unpin, v.tr. (unpinned, unpinning)
1 unfasten or detach by removing a pin or pins.
2 Chess release (a piece that has been pinned).
1 unfasten or detach by removing a pin or pins.
2 Chess release (a piece that has been pinned).
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