B.N.C. is a nickname for Brasenose College. It is a somewhat common practice for the colleges to be known by abbreviated or affectionate names. For example, St. Edmund’s Hall is known as “Teddy Hall,” and Christ Church is sometimes called “The House.”
Brasenose, which supposedly gained its name from a bronze door knocker shaped like a nose, was founded in 1509. It boasts the oldest boat club still existence in the world.