a speech sound in which the mouth is open and the tongue is not touching the top of the mouth, the teeth, etc., so that the flow of air is not limited, for example /ɑː, e, ɔː/
حرف صدادار, مصوت, واکه
see also cardinal vowel
2
a letter that represents a vowel sound. In English the vowels are a, e, i, o and u.