Border Collie.
A medium-sized (average 45 lbs.) dog developed over many years in Scotland for herding sheep. Widely recognized as the most intelligent of dog breeds, Border Collies excel as working dogs, but also dominate in sporting competitions like agility, flyball and frisbee.

Border Collies are typically black and white, but many colors and combinations exist. A BC may have a long (rough) coat, or a short (smooth) coat. Appearance is secondary to intelligence, temperament and working ability in determining if a dog is a "real" Border Collie.

(BCs have recently been inducted into the American Kennel Club for conformation showing. Many BC lovers oppose this because Border Collies have traditionally been bred for working ability with little regard for their appearance. BC advocates fear the breed will lose its working ability and intelligence if bred primarily for appearance.)
Jock, herding the kids around the living room table, is the quintessential BC!
by Alex J. Todd October 05, 2005
Top Definition
bc is an abbreviation for the word because. it's used in msn and in short hand.
"I wasn't in school today bc i was feeling ill"
by Will 123 April 30, 2008
(As in "Before Christ") Term occasionally used in Southern California as a synonym for "old school."
"Dat shit's so old-school it's B.C.!"
by Purple Donkey September 03, 2009
British Columbia- Most Western Canadian province. Also known for it's fine BC bud.
Jeremy went to BC and brought back some BC bud- the finest the world has to offer.
by Dr. Ben May 29, 2003
Abbreviation for "birth control (pills)," used most commonly by girls.
Girl 1: Oh shit, I forgot to bring my b.c.! This is going to ruin my vacation.
Girl 2: Don't worry; we passed a Planned Parenthood on the way here. They're bound to have some free b.c. lying around.
by slammdunc23 February 11, 2011
BC can stand for buttcrack or buttcheek you pick.
you're such a BC!

haha her face looks like a BC
by lalalalacolor September 15, 2009
Bitch cunt; BC is the safe acronym of the word bitch cunt. BC can be said in public and around those who shy away from the words bitch and cunt. If BC is said and you are talking about someone, the people around you will have no clue what BC is referring to.
Man 1 - Yo, my girl ain't gave me no head for a week.
Man 2- She being a real BC!
by mitchiethekidatsfh June 29, 2016
A: you're a dick
B: well you're a BC

A: Kanye west was such a BC at the VMA's
B: Yea, that was a BC move.
by aznboy247 September 15, 2009
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