Lupus

wiktionary

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Borrowed from Latin lupus(“wolf”). Doublet of lobo and wolf.

etymonline

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lupus (n.)

late 14c., used of several diseases that cause ulcerations of the skin, from Medieval Latin lupus, from Latin lupus "wolf" (see wolf (n.)), apparently because it "devours" the affected part. As the name of a southern constellation representing a wolf, by 1706.