“牢”字,甲骨文的形体像牛、羊、马等牲畜被圈养在栏圈中,本义就是关养牛羊马等牲畜的栏圈。栏圈中关养的有时是牛,有时是羊,有时是马。发展到后来,“关牛”的字形固定下来,这个意义只用它表示,这样一直沿用至今。《战国策·楚策四》:“见兔而顾犬,未为晚也;亡羊而补 The word ”Jail“ means that the body of Oracle is like cattle, sheep, horses, etc., being kept in cages in the bar. The original meaning is to keep the barn of cattle, sheep, horses and other livestock. The cows in the pen are sometimes cattle, sometimes sheep, and sometimes horses. Later on, the ”Guan Niu“ shape was fixed. This meaning is only used to indicate that it has been used so far. ”Warring States Chu Cece IV“: ”See rabbits and dogs, not for lateness;