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10.
In the John Lee Hooker "Bluebird" I believe that he may be calling a USPS truck a bluebird, because he tells the bluebird to "Bluebird, please take this letter down south for me", I have never heard Postal trucks called bluebirds elsewhere, but in the context of the song it makes sense, but also, I'm from Seattle, John Lee Hooker is definitely from the South and our dialects are very different.
Bluebird, please take this letter down south for me.
by AndrewZM October 17, 2007
 
1.
slang for cop, police officer, security guard, etc.
"There's a bluebird on my shoulder, can I kill it?"
by DA-BAY August 04, 2005
 
2.
mostly used to describe a perfect, cloudless bright blue sky and plentiful sunshine. Especially in snowboarding conditions.
check out that sky man, it's total bluebird! my favorite to shred to!
by danny tanner May 17, 2006
 
3.
a blue bird is a police helicopter.
fucking blue bird been following us all day!
by chewy510 June 05, 2006
 
4.
It is used to describe a beautiful sunshiny day.
Damn! We have a bluebird.....golf???
by bcraggie August 01, 2005
 
5.
A North American cavity-nesting thrush of the genus Sialia, characterized by blue plumage.
I wish house sparrows wouldn't take over the bluebird house.
by Korora December 01, 2003
 
6.
Sunny skies on the slopes, ideal for any boarder
Bangin blue bird day at the ski park
by 530snow December 11, 2008
 
7.
code word for Cocaine. Etomology: On the Navajo Nation, the Navajo people use Bluebird Flour to make Navajo frybread. Young Navajo cokeheads starting use Bluebrid as a way to refer to cocaine. See related Frybread (reference to crack cocaine)
She's headed to the southside for Bluebird.
by NDNLinguist May 21, 2010