The Collaborative International Dictionary of English v.0.48:

Glossal \Glos"sal\, a.
   Of or pertaining to the tongue; lingual.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

90 Moby Thesaurus words for "glossal":
   accented, alveolar, apical, apico-alveolar, apico-dental,
   articulated, assimilated, back, barytone, bilabial, broad,
   cacuminal, central, cerebral, checked, close, consonant,
   consonantal, continuant, dental, dissimilated, dorsal, flat, front,
   glide, glottal, guttural, hard, heavy, high, intonated, labial,
   labiodental, labiovelar, lateral, lax, light, lingual, linguiform,
   lingulate, liquid, low, mid, monophthongal, muted, narrow, nasal,
   nasalized, occlusive, open, oxytone, palatal, palatalized,
   pharyngeal, pharyngealized, phonemic, phonetic, phonic, pitch,
   pitched, posttonic, retroflex, rounded, semivowel, soft, sonant,
   stopped, stressed, strong, surd, syllabic, tense, thick, throaty,
   tonal, tonguelike, tonic, twangy, unaccented, unrounded,
   unstressed, velar, vocalic, vocoid, voiced, voiceless, vowel,
   vowellike, weak, wide