noun
stamp rally; stamp collection event
A wasei-eigo term for an event where participants visit multiple locations to collect stamps, often at railway stations, tourist spots, or shopping areas. Completion may earn a prize.
wasei-eigo (Japanese-coined English), from stamp rally
駅のスタンプラリーで全部のスタンプを集めた。
I collected all the stamps at the station stamp rally.
観光地でスタンプラリーをやっている
They are holding a stamp rally at the tourist spot.