The Collaborative International Dictionary of English v.0.48:

Linguadental \Lin`gua*den"tal\ (l[i^][ng]`gw[.a]*d[e^]n"tal), a.
   [L. lingua tongue + E. dental.] (Phonetics)
   Formed or uttered by the joint use of the tongue and teeth,
   or rather that part of the gum just above the front teeth;
   dentolingual, as the letters d and t.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Linguadental \Lin`gua*den"tal\, n. (Phonetics)
   An articulation pronounced by the aid or use of the tongue
   and teeth.
   [1913 Webster]