0 a sound that is used in a particular language, especially one that is not considered a word, for example a sound such as "la" used in music or an exclamation such as "huh" :
The songs are not sung in lyrics, but rather in Native American words and phrases, called "vocables", each carrying a special meaning.
the vocables Indian percussionists use to share raga meters
Vocables are common as pause fillers, such as "um" and "er" in English.