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to play (games, sports); to enjoy oneself; to have a good time
to mess about (with alcohol, gambling, philandery, etc.)
to be idle; to do nothing; to be unused
to meet up (with friends); to hang out
to give oneself up (to gambling, drinking, etc.)
to go to (for pleasure or for study)
to tease (someone); to play (with)
to intentionally throw a ball to lower the batter's concentration
公園で子どもが遊んでいる。
Children are playing in the park.
週末は友達と遊んだよ。
I hung out with friends on the weekend.
天気がいいから外に出て遊ぼうよ。
The weather is nice, so let's go out and play.