(in Mesoamerican mythology) An animal companion which accompanies a person from birth to death.

Of or relating to tones or tonality.

Of or relating to the general character, mood, or trend of something.

(music) Employing tones that have a predictable relationship to some tonic.

(linguistics) Employing differences in pitch (tones) to distinguish differences in the meaning of otherwise similar words (words which would otherwise be homophonic).