back.board
n.（名词）
A board placed under or behind something to provide firmness or support.后部挡板：被放在某物下面或后面的起固定或支撑作用的板子A board placed beneath the body of a person with an injury to the neck or back, used especially in transporting the person in such a way as to avoid further injury.脊椎矫正板：放于一个颈部或背部受伤的人身体下的板子，尤指用这种方式运送某人以避免受到更大的伤害Basketball The elevated vertical board from which the basket projects.【篮球】 篮板：抬高的用于投篮的垂直板
