vocable

Etymology

From French vocable or Latin vocābulum, from Latin vocō (“I call”).

noun

1. (linguistics) A word or utterance, especially with reference to its form rather than its meaning.
   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. 1974, Anthony Burgess, The Clockwork Testament
   At first the man puzzled; then he smiled. He pronounced a string of uncouth vocables. 1925, John Buchan, The House of the Four Winds
2. (music) A syllable or sound without specific meaning, used together with or in place of actual words in a song.
   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. a. 2010, Victoria Lindsay Levine, Native American Music, Encyclopaedia Britannica

adj

1. (linguistics) Able to be uttered.
   a vocable marker