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3.
adj. Something that is illegal. Derived from the aforementioned word to form 'ill-eagle', then using synonyms, ie. 'sick' for 'ill' and 'bird' for 'eagle'.
1) Dude, you just ran a red light!
2) Who cares, it ain't sick bird unless the fuzz roll around.
by A. David Dempster May 18, 2006
 
1.
phrase used to decribe something overly incredible

syn: awesome, cool, wicked
Did you see him do that jump? It was totally sick bird
by the fonz April 06, 2005
 
2.
adj. Something that is illegal. Derived from the aforementioned word to form 'ill-eagle', then using synonyms, ie. 'sick' for 'ill' and 'bird' for 'eagle'.
1) Dude, you just ran a red light!
2) Who cares, it ain't sick bird unless the fuzz roll around.
by A. David Dempster November 06, 2006
 
4.
Any gift of worthless or negative value; i.e., like a soon-to-die sick bird or an already dead parrot that's been given as a gift. Metaphorically speaking, a kind of backhanded compliment or ironic flattery meant to mock or piss someone off (as one would be pissed off to receive a sick bird as a gift).
"What do you think of me going for that new job HR just posted?"
"I think your monumental intellect could only get in the way of your minimal experience."
"Ah, why the sick bird, dick?"
by Horatio Roachfinder September 01, 2009
 
5.
a person who is overly skinny, much like a sick bird who is dying.
Damn Nate, look at that sick bird. Shes ugly as fuck
by shivers December 12, 2004