jail bird

from WordNet (r) 3.0 (2006)
jail bird
    n 1: a criminal who has been jailed repeatedly [syn: {jail
         bird}, {jailbird}, {gaolbird}]
from The Collaborative International Dictionary of English v.0.48
jailbird \jail"bird`\, jail bird \jail" bird`\
   A prisoner; one is in prison or who has been confined in
   prison. [Slang]
   [PJC]
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