射的甲骨文就是弓箭,属于象形字。后来演变成“身+寸”,身是强调人是射箭的主体,而寸是就是手的意思,通过手拉弓放箭。这就变成了会意字。
具体解释,请点击下面的link.
https://learnchinesewithfun.blogspot.com/2016/10/learn-chinese-with-fun-99-shoot.html