Source : Webster's Revised Unabridged Dictionary (1913)

Glottal \Glot"tal\, a.
   Of or pertaining to, or produced by, the glottis; glottic.

   {Glottal catch}, an effect produced upon the breath or voice
      by a sudden opening or closing of the glotts. --Sweet.

Source : WordNet®

glottal
     adj : of or relating to or produced by the glottis; "glottal
           stops"