D defs.my
Entry 2 senses Webster, 1913

Untwist

· Un·twist · IPA
01 v. t. To separate and open, as twisted threads; to turn back, as that which is twisted; to untwine.
  1. 1.
    To separate and open, as twisted threads; to turn back, as that which is twisted; to untwine.
    “If one of the twines of the twist do untwist, The twine that untwisteth, untwisteth the twist.” — Wallis.
  2. 2.
    To untie; to open; to disentangle.