How do you spell Lingual

Available Definitions:
1) a. - Of or pertaining to the tongue; uttered by the aid of the tongue; glossal; as, the lingual nerves; a lingual letter.
2) n. - A consonant sound formed by the aid of the tongue; -- a term especially applied to certain articulations (as those of t, d, th, and n) and to the letters denoting them.