This is the 3340th most frequent Japanese word.
改札
Ticket gate.
The word "改札" (kaisatsu) is used to describe the ticket gate at a station, which serves as a checkpoint for entering and exiting the station.
駅の改札口で友達と待ち合わせをしました。
I arranged to meet my friend at the train station ticket gate.
Here, "改札" (kaisatsu) refers to the act of managing access through the ticket gate, which involves inserting a ticket into a machine.
改札を通る際に切符を機械に入れてください。
Please insert your ticket into the machine when passing through the ticket gate.
In this sentence, "改札" (kaisatsu) is used to signify the physical ticket gate structure itself, which the individual jumped over.