vocable

1. (linguistics) A word or utterance, especially with reference to its form rather than its meaning.Examples: "Without words and almost with the seriousness of asylum nurses they at once set upon an unsavoury-looking matron who began to cry out Mediterranean vocables of distress."; "At first the man puzzled; then he smiled. He pronounced a string of uncouth vocables."

2. (music) A syllable or sound without specific meaning, used together with or in place of actual words in a song.Examples: "Many Native American songs employ vocables, syllables that do not have referential meaning. These may be used to frame words or may be inserted among them; in some cases, they constitute the entire song text."