to move so close to someone or something that the person or thing cannot move away

When I got back to my car, I found it had been boxed in by a lorry. 回来时发现我的车被一辆卡车堵在里面了。

to prevent someone from doing what they want to do

She did not want to send her son to a school where he would be boxed in by so many rules and regulations. 她不想把儿子送到一所被规章制度束手束脚的学校。