tentative reservation; provisional booking
Used for a reservation or hold that is not yet confirmed, often in contexts like event tickets, hotel rooms, or appointments.
人気のコンサートなので、とりあえず仮押さえをしておいた。
Since it's a popular concert, I made a tentative reservation for now.
Compound of 仮 (かり, 'temporary') and 押さえ (おさえ, 'holding, securing'), from the verb 押さえる (おさえる, 'to hold, to secure').