Term used to describe someone with a protruding sternum and a skeletal body type.

See also:
ashtray; carcass;
What's the matter with you birdcage?
by Brad February 27, 2004
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1 - A handjob, delivered through the boxers, usually in a situation in which the giver of the birdcage believes the recipient's genitals to be dirty or otherwise inadvisable to touch. A Chi-Phi-ism. Can be used as a verb.

2 - Metaphorically, anything unsatisfying or upsetting.

3 - A stock phrase, "Worse than a birdcage," used to connote extreme irritation.
1 - Man, this broad gave me the birdcage right on the dance floor. Sir!

2 - Those fucking cops were giving me the birdcage.

3 - The party was worse than a birdcage, bro, everyone was completely state.
by yt March 14, 2003
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An inappropriate over reaction; OR
A poor solution using drastic measures to a solve a problem.
1) She really put the baby in a birdcage and tried to burn down the Domino's that got her order wrong.

2) The Tea Party members are putting the baby in the birdcage on this Healthcare repeal.
by E.P. Cow July 14, 2011
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The New York Times used to be the Newspaper of Record. Now it's a birdcage liner.
by octopod March 30, 2006
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In it's most basic form, A group of brothers cheering uninhibited for their team to show how much they love and support their school. Creativity, brotherhood, raw emotion, and a tiny bit of arrogance is what makes the birdcage the best group of students to ever come together to support a high school sports team.
Creighton Prep Birdcage? Best student section in Nebraska, potentially the world.
by longlivecpbirdcage January 13, 2014
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Someone who has all the skills and knowledge to thrive, but due to circumstance, their surroundings, and the people and things their surrounded by, they will likely never live up to their potential. They will often feel inferior and insecure because they don’t seem to fit in, and don’t have the same abilities as their peers.

A fish has all the qualities and abilities to survive and thrive, but are helpless out of water, that’s where the saying is supposed to mean on a literal level, but on a figurative level it means someone who has skills and abilities that may be unconventional or less socially acceptable, and are pressured to fit a mold that doesn’t work for them.
Alice is a fish inside a birdcage. She has incredible potential, but she hangs around shitty people who don’t support her, and she keeps trying to fit in where she doesn’t truly belong.
by TallWhiteDude October 13, 2023
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A gay person or couple having to act straight as a means to prevent confrontation with homophobes or extreme conservatives.
Armond and Albert were birdcaging (or having to birdcage) in order to prevent any controversy with their future in-laws, who were extremely conservative and would not approve of the gay lifestyle.
by Crefedeaux October 16, 2023
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