Vowel

n. [Fr. voyelle, Pr. & Sp. vocal, Pg. vogal, It. vocale, Lat. vocalis (sc. litera), from vocalis, sounding, from vox, vocis, a voice, sound.] (Gram.) A voice-sound; a constituent of the spoken alphabet other than a consonant; also, a letter or character which represents such a sound; an utterance of the human voice made through a more open position of the organs than that with which a consonant is uttered.

☞ In the English language, the written vowels are a, e, i, o, u, and sometimes w and y. The spoken vowels are much more numerous.

a. Of, or pertaining to, a vowel; vocal.