noun
outer pot of a rice cooker
Refers to the outer container of a rice cooker, as opposed to the inner cooking pot (内釜).
See also: 内釜 (うちがま)
炊飯器の外釜が熱くなっているので触らないでください。
The outer pot of the rice cooker is hot, so please don't touch it.
noun
outdoor bathwater heater
A device for heating bathwater from outside the bathtub, often used in traditional Japanese baths. Contrasts with 内釜 (indoor/immersed heater).
See also: 内釜 (うちがま)
昔の家では外釜でお風呂を沸かしていた。
In old houses, they used to heat the bath with an outdoor bathwater heater.
内釜 is the inner pot of a rice cooker or an indoor/immersed bathwater heater, while 外釜 is the outer pot or outdoor heater.
Compound of 外 (そと, 'outside') and 釜 (かま, 'pot/kettle'). The reading そとがま follows standard rendaku voicing.