A relationship in which two parties closely monitor and challenge one another in a suspicious or self-protective manner, often because each party is attempting to gain an advantage over the other
The hackers played a cat and mouse game with the computer's system administrators: The hackers kept trying new tricks, and the system administrators kept mounting electronic defenses to prevent damage and catch the hackers.
a game for children in which the players form a circle and join hands; they raise their hands to let a player inside the circle or lower their hands to bar a second player who is chasing the first