sublingual

from WordNet (r) 3.0 (2006)

sublingual
    adj 1: beneath the tongue

from The Collaborative International Dictionary of English v.0.48

Sublingual \Sub*lin"gual\, a. [Pref. sub + lingual: cf. F.
   sublingual.] (Anat.)
   (a) Situated under the tongue; as, the sublingual gland.
   (b) Of or pertaining to the sublingual gland; as, sublingual
       salvia.
       [1913 Webster]