懐かい炉ろ灰ばいかいろばいMeanings1nounfuel for a pocket warmerRefers to the solid fuel, typically charcoal briquettes or similar, used inside a traditional Japanese pocket warmer (懐炉).懐かい炉ろ灰ばいを新あたらしいものに取とり替かえる。Replace the fuel for the pocket warmer with a new one.