本义是包围，是“围”的本字。
也作部首用字，例字回、囚、因、困；还通“国”字。
Its original meaning is "surround", and it is the original character of "围".
It is also used as a radical, exemplified by the characters "回", "囚", "因", and "困"; it is also interchangeable with the character "国".