柯林斯詞典head restraint 1. N an adjustable support for the head, attached to a car seat, to prevent the neck from being jolted backwards sharply in the event of a crash or sudden stop 頭部保護裝置; 安裝在汽車座位上,防止因發(fā)生撞車或突然停車造成司機脖子受傷 返回 head restraint