unpin verb trans. [ʌn'pɪn] Infl. -nn-. ME.
[from UN-² + PIN verb.]
1. Unbolt (a door). ME.

2. Remove a pin or peg from; unfasten, detach, or remove in this way. L16.
■ F. Britten The balance sping has..to be unpinned every time the balance staff is removed.
■ M. Roberts We unpin our hats.
b. Undo the dress of (a woman) by the removal of pins. E17.

3. Chess. Release (a man that has been pinned). L19.

[TahlilGaran] English Dictionary ▲