As a joke. / In operation, active, currently valid. / (sports) Available to be played according to the rules of the game in question; within the boundaries of the pitch etc.

Playing, in the process of playing. / (figuratively) In action.

present participle of play on

Third-person singular simple present indicative form of play on

plural of by-play

To act in a way most suitable to; to act in a way that best brings out (a quality, condition, etc.). / To act in order to gain the attention or admiration of.

Third-person singular simple present indicative form of play with

present participle of play with

simple past tense and past participle of role-play

simple past tense and past participle of play down