noun
steam bath; cauldron bath
A traditional Japanese steam bath where water (often brine) is heated in a cauldron-like structure. Similar to 蒸し風呂 (mushiburo).
See also: 蒸し風呂 (むしぶろ)
昔ながらの釜風呂は、塩水を使うこともある。
Traditional cauldron baths sometimes use brine.
旅館で釜風呂に入って、体がよく温まった。
I took a steam bath at the inn and my body warmed up nicely.
蒸し風呂 is a general term for a steam bath, while 釜風呂 specifically refers to a bath heated by a cauldron-like structure, often using brine.
Compound of 釜 (kama, 'cauldron') and 風呂 (furo, 'bath'), describing a bath where water is heated in a large pot or cauldron.