A female given name, or historically a type of shad fish (a herring-like fish).
As a fish name, from Old French 'alise,' possibly related to a Celtic root. As a personal name, a diminutive of 'Alice,' which comes from Germanic 'Adalheidis' (noble, of noble kind).
The word carries two completely unrelated meanings—a medieval fish and a modern first name—showing how homonyms can diverge so completely that people forget they're the same word.
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