noun

A consonant sound formed by closure or near closure of the lips.

For alveolar affricates it is 0 when is, 10 when is. is 250 for velars, 100 for bilabials and dentalveolars.

adjective

(of a speech sound) formed by closure or near closure of the lips, as in p, b, m, w.

I am now moving my lips, which contains four bilabial consonants, is another example: the moment you say it, it becomes true.