glot ‧ tis /ˈɡlɒtəs, ˈɡlɒtɪs $ ˈɡlɑː-/ BrE AmE noun [countable] technical
[ Date: 1500-1600 ; Language: Greek ; Origin: glotta 'tongue' ]
the space between your VOCAL CORD s which helps to make the sound of your voice. When this space is opened and closed, the movement produces a sound.
—glottal adjective