To gyrate is to revolve around a
point or
axisor to
oscillate with or as if with a
circular or
spiral motion.
Often used to refer to the process of
orbiting one's
hips around the
center of one's
mass along the
z-axis (if one pictures the ground as a
Cartesian coordinate plane).
One notorious source of
gyrative imagery is the
Squaresoft game |Xenogears|, in which
giant robots suggestively, and constantly, sway their
lubricated steel hips.