1. To open, as what is rolled or convolved
2. To display; to reveal.
3. To remove from a roll or register, as a name.

ETYM as. unwindan. Related to Un-, and Wind to coil.
(Irregular preterit, past participle: unwound).
1. To reverse the winding or twisting of; SYN. wind off, unroll.
2. To separate the tangles of; SYN. disentangle.