jailbirds

英 [ˈdʒeɪlbɜːdz]

美

n.  长期坐牢的囚犯
jailbird的复数

柯林斯词典

• 囚犯；犯人；坐过牢的人
  If you refer to someone as ajailbird, you mean that they are in prison, or have been in prison.