gaol bird (= gaol-bird; [USa]jail bird)

• 囚犯; 释放犯; 惯犯; 恶棍；无赖

gaol bird (= gaol-bird; [USa]jail bird)的用法和样例：

例句

1. The days of a judge telling a miscreant to join the army or go to jail are over.
   由法官判一名恶棍不当兵就坐牢的日子过去了。