Definify.com
Webster 1913 Edition
Faucal
Fau′cal
,Adj.
[L.
fauces
throat.] Pertaining to the fauces, or opening of the throat; faucial;
esp.,
(Phon.)
produced in the fauces, as certain deep guttural sounds found in the Semitic and some other languages.
Ayin is the most difficult of the
faucals
. I. Taylor (The Alphabet).