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4.
B5
common Abbreviation for "Babylon 5", a science-fiction TV series as revered among hackers as was the original Star Trek.
by Biohertz January 30, 2003
 
1.
B5
5 SEXY boys that can sing
woa b5 is sexay. i wish i had one
by crazy 4 B5 March 25, 2005
 
2.
B5
A boy group signed to P. Diddy's Bad Boy Records. Consists of five brothers: Dustin, Kelly, Patrick, Carnell, and Bryan. They currently reside in the crunk capitol of the world, Atlanta, Georgia. The guys can sing and, as Diddy himself said, "Dance they asses off." The name "B5" comes from their last name, Breeding. Oh, and they're pretty cute, too.
Girl 1: B5 is the best boyband since B2K.
Girl 2: B2K should be called B4 B5.
by Tricia October 06, 2005
 
3.
B.5
When you receive your report card to find you have 2 As and 2 Bs.
"Hey, what did you get on your report card?"
"A B.5"
"Two As and two Bs? Cool."
by N.Dawg February 14, 2008
 
5.
b5
A Flat 5, in music the 5th degree of the scale lowered a half-step. Also in chords, minor 7 (b5) minor seven chord with a lowered 5th.
"Hey Graham, was there a b5 on measure three?"
by Hobie May 03, 2005
 
6.
b5
Big Black Butt Busting Baton. That raped the girl at the winch. They also all play basketbal and got away with it.
"Yo did you hear about the b5?"
by sharttastic February 20, 2005