1) the central part of a stadium used for sport and games (arena)

2) a person trained for competing in physical exercises and outdoor games e.g. a person who is good at running, jumping, swimming etc (athlete)

3) a round object used in games (ball)

4) a small cube marked with spots to indicate numbers, used in games (dice)

5) a person with a strong interest (in sports, games etc) (enthusiast)

6) (an attempt or activity with) a risk of loss or a chance of profit; to play games to try to win money (gamble)

7) playing games for money (gambling)

8) (in games such as football) the posts between which (the goal-mouth) the ball is to be sent in order to score; an aim of one's effort or ambition (goal)

9) a person, who is fond of making jokes; an extra playing-cards with the highest value, used in some games (joker)

10) (an example of) a kind of hard stone with patterns, used when polished for building a sculpture; a small ball of coloured glass used in games played by children (marble)