Definition of pullovers:
(n) :
A sweater that must be put on by pulling it over the head; a sweater without buttons or a zipper in front.
(n) :
(chiefly law enforcement) An instance of a vehicle being pulled over.
(n) :
(weightlifting) An exercise performed lying on the back in which the arms are extended behind the head and exertion lifts the weight above the head.
(n) :
(gymnastics, horizontal bar) An exercise in which the gymnast pulls up from a hang lifting the legs up and over the bar thus rolling into a support position.