Words the Bible translates as brimstone

English uses one word here. The Bible uses 2 words, and they do not mean the same thing. Each is listed with what it actually means, most frequent first.

theionθεῖονsulfur: the yellow mineral that catches fire easily and burns with a choking smell, named in the New Testament only where something is being destroyed in judgment
gophritגׇּפְרִיתsulfur: the yellow mineral that catches fire easily and burns with a choking smell, the Bible's picture of a place destroyed by God

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Every English meaning beginning with B is on its letter page, and the whole index starts at Browse.