Her body was plump, far from perfect, and she was gyrating in rhythm to the chanting—making love to Sophie’s grandfather.
There are no more uses of "gyrate" in the book.
Show samples from other sources
Lindsay gyrates with a ski pole between her legs, rocking back and forth.
Lauren Oliver -- Before I Fall
The welcome statement had shocked Thomas, but before he could respond, the long-haired man practically pulled him and Brenda inside, then started ushering them through a tightly packed crowd of dancing bodies, gyrating and jumping and hugging and spinning.