Definition of "vowel sound" []

• A speech sound made with the vocal tract open (noun)

WordNet. Princeton University. 2010.

• "It would seem, then, that when one of these consonants follows a vowel, then sometimes the last note on the vowel sound is smoothly fused into the consonantal sound, part of its time value being given to the singing of the liquid or semivocal consonant."
• "Schwa is the reduced vowel sound in the second syllable, which you represent as “uh,” and which phonologists represent as e."
• "The vowel sound of the word peur is not distinguished from the close sound in peu."