n.囚犯；流氓；慣犯
=jailbird（美）.
The gaolbird feels tired of earthly life that no one on earth believes him any longer. 一個(gè)正在服刑的勞改犯在去修路時(shí)揀到1000元，并毫不猶豫的把它交給了獄警(以求減刑)。
