die Umkleide
changing room
A room or cubicle where you can change clothes, for example in a swimming pool, gym, or clothing store.
Ich treffe dich nach dem Sport in der Umkleide.
I'll meet you in the changing room after sports.

changing room
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changing room
A room or cubicle where you can change clothes, for example in a swimming pool, gym, or clothing store.
Ich treffe dich nach dem Sport in der Umkleide.
I'll meet you in the changing room after sports.

The noun 'die Umkleide' is derived directly from the verb 'sich umkleiden' (to change clothes). So the Umkleide is the place where you change clothes.
Nach dem Sport ziehe ich mich immer in der Umkleide um.
After sports, I always change in the changing room.
The preposition 'in' is used with either the dative or accusative depending on the situation. 'In der Umkleide' (in the changing room, dative) describes a location, while 'in die Umkleide' (into the changing room, accusative) describes movement toward it.
Deine Tasche steht noch in der Umkleide.
Your bag is still in the changing room.
A 'Umkleide' is typically found in sports facilities such as a swimming pool, gym, or sports hall, as well as in clothing stores.
Die Umkleiden in diesem Schwimmbad sind nach Geschlechtern getrennt.
The changing rooms in this swimming pool are separated by gender.
cabin / booth
'Kabine' and 'Umkleide' overlap strongly when it comes to places for changing clothes. 'Umkleide' is the general room or area where you change clothes, for example in a swimming pool, gym, or store. 'Kabine' is often smaller and more separate, sometimes only for one person. In sports, 'Kabine' can also mean the team's locker room. The words are easy to confuse because many changing rooms contain individual changing booths. Simply put: the 'Umkleide' is the place for changing clothes; the 'Kabine' is often the small, private part of it.

Vor dem Schwimmen lassen wir unsere Taschen in der Umkleide.
Before swimming, we leave our bags in the changing room.
Im Modegeschäft probiert Sofia die Jacke in der Kabine an.
In the clothing store, Sofia tries on the jacket in the changing room.