vowel
//ˈvaʊ.əl//
Noun
vowelSingular
vowelsPlural
1
A speech sound produced without obstruction of airflow in the vocal tract, typically forming the nucleus of a syllable.
The English language has five vowels: A, E, I, O, and U.
2
A letter of the alphabet representing such a sound, such as A, E, I, O, or U in English.
The word 'apple' starts with the vowel A.