A small piece of paper or card that allows you to use a service, like riding a train, entering a concert, or attending an event. You buy it to confirm your right to entry or travel.

電(でん)車(しゃ)に乗(の)ったり、映(えい)画(が)を見(み)たりするときに使(つか)う小(ちい)さな紙(かみ)。お金(かね)を払(はら)って買(か)う。