lingual

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of, relating to, or situated near the tongue or a tonguelike organ.
• adjective Linguistics Pronounced with the tongue in conjunction with other organs of speech.
• adjective Of languages; linguistic.
• noun A sound, such as (t), (l), and (n), that is pronounced with the tongue and other organs of speech.

from The Century Dictionary.

• In anatomy and zoology: Of or pertaining to the tongue; glossal.
• Of or pertaining to a lingua or any tongue-like part See. phrases.
• Pronounced by or chiefly by the tongue: variously applied to sounds made with the tip or forward part of the tongue, as t, d, etc. (also called dental), or especially to the peculiar Sanskrit t, d, etc. (also called cacuminal, cerebral), forming a distinct class from the Sanskrit dentals, and pronounced with the tip of the tongue drawn back.
• Relating or pertaining to utterance, or of the use of the tongue in speaking: as, lingual corruptions of words or language.
• noun A letter pronounced in the manner described in I., 2.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to the tongue; uttered by the aid of the tongue; glossal
• adjective lying near the tongue; especially, in dentistry, on the surface of the tooth next to the tongue. Contrasted with buccal, the side of a tooth touching the cheek, i. e. the side opposite to the lingual side.
• adjective (Zoöl.) See Odontophore.
• noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Related to the tongue.
• adjective Related to language or linguistics.
• adjective phonetics articulated with the tongue
• adjective dentistry Of a lower tooth, on the side facing the tongue. See mesial.
• noun phonetics a sound articulated with the tongue

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective pertaining to or resembling or lying near the tongue
• noun a consonant that is produced with the tongue and other speech organs
• adjective consisting of or related to language