sauna
Refers to the Finnish-style steam bath, widely adopted in Japan. Can also refer to the facility or the activity.
from Finnish
I often go to the sauna on weekends.
I like going into the sauna after exercising.
This hotel comes with a sauna.
I sweated a lot in the sauna and felt refreshed.
I'm planning to go to a sauna with friends this weekend.
I came out of the sauna after ten minutes and got into the cold bath.
Borrowed from Finnish 'sauna'.