vowels is a form of:

Vowel



noun
1.
(a speech sound made without audible stopping of the breath (opposed to a consonant), a letter as a, i, o, u, and sometimes y. representing such a sound) ស្រៈ
ENGLISH MEANING
noun
1.
A vocal, or sometimes a whispered, sound modified by resonance in the oral passage, the peculiar resonance in each case giving to each several vowel its distinctive character or quality as a sound of speech; -- distinguished from a consonant in that the latter, whether made with or without vocality, derives its character in every case from some kind of obstructive action by the mouth organs. Also, a letter or character which represents such a sound.
adjective
1.
Of or pertaining to a vowel; vocal.