unwind-v; 2 Senses

Sense Number 1: Reverse the winding or twisting of; separate the tangles of.

NOTE: Includes metaphorical uses.

Then he unwound her elaborate hairstyle, soothing her scalp with his
delicate fingers.
The cat unwound the ball of yarn.
She unwinds the rope to let the pots down over the stove.n

VerbNet: bend-45.2
FrameNet: NP
PropBank: unwind.01
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: (Cause to) become less tense; rest or take one's ease.

John unwound in the hot tub at the end of a long day.
You should go unwind in the garden before dinner.

VerbNet: NM
FrameNet: NP
PropBank: unwind.02
WordNet 3.0 Sense Numbers: 3, 4