To twist into coils or folds. (Merriam – Webster)
To twist so as to distort: (Wrench). (Merriam – Webster)
To twist (the body or a bodily part) in pain. (Merriam – Webster)
To move or proceed with twists and turns. (Merriam – Webster)
To twist the body about, or squirm, as in pain, violent effort, etc. (Dictionary.com)
To shrink mentally, as in acute discomfort. (Dictionary.com)
To make large twisting movements with the body: (Cambridge Dictionary)
To experience a very difficult or unpleasant situation or emotion, such as extreme embarrassment. (Cambridge Dictionary)
Make twisting, squirming movements or contortions of the body. (Oxford Dictionaries)
Respond with great emotional or physical discomfort to (an intense or unpleasant feeling or thought) (Oxford Dictionaries)
Why does Miley Cyrus writhe around on her bed in her new video We Can’t Stop?
Writhe around with C.L. Moore.