rubican / rubicon [ru:bɪˈkɒn]
rubican – adj. & n. – adj. of horses – black or sorrel with white patches; n. – a horse with this colouring
rubicon – n. & v. – n. – 1. an irrevocable point; 2. cards – a target score that increases the penalty for the loser; v. – defeat an opponent’s cards by differing amounts depending on the game