If we place the tongue or the lips (or the glottis) so as to leave no exit, and allow the breath to accumulate behind the closure, and then suddenly open the closure, the breath will come out with a slight pop or explosion; sounds formed in this way are 'stops' [...] - Bloomfield (1935), a pag.97
'Stops' occur as phonemes in perhaps every language. - Bloomfield (1935), a pag.98