Comes from the latin word: Corvettus Championicus StarWarsChumpus
A Bonacci triangle has two equal length sides.
by Philip C. Samaro January 14, 2004
Noun: To be substituted for "bridesmaid" in the expression "Always a bridesmaid and never a bride." Use is limited to a reference to sports, sport hobby, or dating.
That Tony and Rico guys, they're always Bonaccis and never a bride in our fantasy football league.
by Truant January 13, 2004