Wor·mil n.
 1. Zool. Any botfly larva which burrows in or beneath the skin of domestic and wild animals, thus producing sores. They belong to various species of Hypoderma and allied genera. Domestic cattle are often infested by a large species.  See Gadfly. Called also warble, and worble.  [Written also wormal, wormul, and wornil.]
 2. Far. See 1st Warble, 1 (b).

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