Definition
to confine individuals or animals within a restricted space
将...圈住；将...封闭起来
She penned the dog in the yard to make sure it wouldn't run away.
她把狗圈在院子里，确保它不会跑掉。
The facility is designed to pen animals up in a secure area.
这个设施是为了将动物圈在一个安全的区域。
When the heavy rain came, we decided to pen the kids in indoors to keep them dry.
当大雨来临时，我们决定把孩子们圈在室内以保持干燥。