1. A speech sound that is produced by comparatively open configuration of the vocal tract, with minimal obstruction, and which is a unit of the sound system of a language that forms the nucleus of a syllable.
The vowels in English are a, e, i, o, u, and sometimes y.
As vogais do português são a, e, i, o, u.
2. The letter or symbol representing such a sound in writing or printing.
Write down all the vowels you see in this word.
Escreva todas as vogais que você vê nesta palavra.