We don't have synonyms for lingualis yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are lingual, lingually and linguals.
(n) :
(anatomy) A longitudinal band of muscular fibres, situated on the undersurface of the tongue, lying in the interval between the hyoglossus and the geniohyoglossus, and extending from the base to the apex of the organ.
(n) :
(anatomy) A longitudinal band of muscular fibres, situated on the undersurface of the tongue, lying in the interval between the hyoglossus and the geniohyoglossus, and extending from the base to the apex of the organ.