The frightening thing, he reflected for the ten thousandth time as he forced his shoulders painfully backward (with hands on hips, they were gyrating their bodies from the waist, an exercise that was supposed to be good for the back muscles) — the frightening thing was that it might all be true.
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.