play

verb

1. To act in a manner such that one has fun; to engage in activities expressly for the purpose of recreation or entertainment.

   “The children played in the park.”

2. To toy or trifle; to act with levity or thoughtlessness; to be careless.

   “Don't play with your food!”

3. To perform in (a sport); to participate in (a game).

   “He plays on three teams.”

4. Specifying a particular sporting role or position.

   “He plays left back for Mudchester Rovers”

noun

1. Activity for amusement only, especially among the young.

   “Children learn through play.”

2. Similar activity in young animals, as they explore their environment and learn new skills.

   “This kind of play helps the young lion cubs develop their hunting skills.”

3. The conduct, or course, of a game.

   “Play was very slow in the first half.”

4. The sphere or circumstance in which a playing implement, such as a ball, is played or available to be played (see also in play, out of play).

   “In potting the yellow ball, he's knocked the green into play.”