Occurs only in connection with the sixth plague of Egypt (Ex. 9:9, 10). In Deut. 28:27, 35, it is called “the botch of Egypt.” It seems to have been the fearful disease of black leprosy, a kind of elephantiasis, producing burning ulcers.
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Blains
Historical dictionary entry
Scripture references
Source: Easton’s Bible Dictionary (1897). Historical dictionary wording reflects the scholarship and language of its era.