Glottal Stop
Wikipedia: The glottal stopis a type of consonantal sound used in many spoken languages, produced by obstructing airflow in the vocal tract or, more precisely, the glottis. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʔ⟩… The symbol ⟨ʔ⟩is a letter of the Latin alphabet, used to represent a glottal stopin several phonetic transcriptionschemes, as well as in the alphabets of some languages. A superscriptversion, ⟨ˀ⟩,is also used… In English, the glottal stop is represented, for example, by the hyphen in uhoh!.For most United States English speakers, a glottal stop is used as an allophoneof /t/between a vowel and a syllabic “n”, as in button or mountain, except when talking.