Webster’s Revised Unabridged Dictionary · 1913
Lytta
Lyt′ta (lĭt′tȧ), n.; pl. Lyttæ (-tē). [L., a worm said to grow under the tongue of dogs, and to cause canine madness, fr. Gr. λύττα, λύσσα, lit., madness.] (Anat.) A fibrous and muscular band lying within the longitudinal axis of the tongue in many mammals, as the dog.