reversis

noun

Definition of reversis

plural of reversi

1 : a card game in which the player who makes the fewest points and takes the fewest tricks wins
2 : a game for two which is played on a checkerboard with 64 pieces having one color on one side and another on the other and in which if a player can so place his men as to enclose one of the opponent's he may reverse it and use it as one of his own