What is "faucal"

Faucal \Fau"cal\, a. [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).

a. Relating to the fauces, or opening of the throat; faucial. n. (context phonetics English) A sound produced in the fauces.

adj. of or relating to the fauces