vēˈbräd.(ˌ)ō, vīˈ-, -ä(ˌ)tō noun
( -s )
Etymology: Italian, past participle of vibrare to vibrate, from Latin, to shake, vibrate — more at wipe
1. : a slightly tremulous effect imparted to vocal or instrumental tone for added warmth and expressiveness and consisting of slight and rapid variations in the pitch of the tone being produced
2. : tremolo 1b
3. : a periodic fluctuation of sustained tones or of tones of steadily changing pitch in speech and especially in emotional speech