1) Of the tongue 2) Pertaining to the tongue 
• (a.) Of or pertaining to the tongue; lingual.
Synonym for lingual ... <dentistry> The tooth surface next to your tongue or things mounted on the tooth surfaces next to your tongue. ... (08 Jan 1998) ... 
(glos´әl) lingual (def. 1).
Glos'sal adjective Of or pertaining to the tongue; lingual. 
Type: Term Pronunciation: glos′ăl Synonyms: lingual1
Glossal: Of or pertaining to the tongue. Glossal is used as both an adjective and a compound word, as in hypoglossal nerve and thyroglossal cyst. From the Greek glossa meaning tongue.
glossal Referring to, relating to, or pertaining to, the tongue.
adjective, Greek glossa = tongue.
of or pertaining to the tongue.