A non-gender specific term of affection, usually applied to a significant other i.e. girlfriend or boyfriend. Can also be applied to close friends.
by Robyn Saul January 21, 2004

Derived from the Indonesian word "ibu" used to describe a woman or house wife, shortened in Indonesian to "bu" in intimate relationships. In English "bu" is used by a male to describe his girlfriend or significant other.
by Matthew October 17, 2004

Sup, Bu! How Ya Doin?
by Kailua boy January 31, 2004

by Screech January 31, 2004
