Meaning

verb reverse the winding or twisting of

verb separate the tangles of

verb become less tense, rest, or take one's ease

originFrom Middle English unwinden, from Old English unwindan (“to unwind; unwrap”), from Proto-Germanic *andawindaną (“to unwind”); equivalent to un- + wind (“to coil”). Cognate with Dutch ontwinden (“to unwind”).

Etymology from Wiktionary, CC BY-SA 3.0