Someone who consistently gets sentenced to jail time and doesn't care. If they have to do a 4 year bid they would just eat it up like its nothing. They eat, sleep, and think jail and are institutionalized. When released, they have a hard time reintegrating back into society and are likely to somehow end up right back behind bars.
Person 1: Did you hear Ramón got locked up again?

Person 2: I'm not surprised. He's a jailbird. That's all he knows.
by haanspeedball March 26, 2016
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SOmeone who escapes jail and is trown back in
That niggas a jailbird
by numb in balls August 20, 2003
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A person with many alter egos and whom doesn't know shit. Never believe what Jailbird tells you because it's most likely wrong.

Could also be a name for someone that enjoys fucking animals. Hence, the JailBIRD nickname.

Alter-Egos/Nicknames: Jubbardio, Jubbark, Jubbarkio, JJ
brown kid: hey, I heard you like wiener.
black guy: WHAT! WHO THE FUCK TOLD YOU THAT NIGGA?!
brown kid: Jailbird...Brrrrahh
black guy: Jailbird don't know shit.
Bryce: Sup zood?
by nadjask February 14, 2009
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Jailbird is a term used in southern cape breton, which is based on a 40 year old drunk, contraband smoking fuck up. The characteristics of a jailbird are the following...cheap, lazy, do anything to make a quick dollar, enjoys his liquor, or is down right fucked in the head.
Holy Fuck, you fuckin' jailbird, you wouldn't let me bum one smoke off you.

by Shayne Porno December 4, 2006
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A really hot girl that is under 18 so if your caught having sex with her you go to jail.
Ashley is wicked hot. But she is a jailbird so she's off limits
by Pimp daddy flexxx August 2, 2005
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The Juniors class theme for intermurals!
The Juniors at my high school are all jailbirds for intermurals! We should have been Jailbait Juniors instead!
by SparklingToros16 March 19, 2004
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