SEMITIC LANGUAGES
'The Arabic hamza, seen <a href="http://www.j-archive.com/media/2009-10-29_DJ_27.jpg" target="_blank">here</a>, represents <a href="http://www.j-archive.com/media/2009-10-29_DJ_27a.jpg" target="_blank">this</a> type of stop in which you close up a gap between your vocal cords'
a glottal stop