n. - In the widest sense, a dividing into short portions by a regular succession of motions, impulses, sounds, accents, etc., producing an agreeable effect, as in music poetry, the dance, or the like.
n. - Movement in musical time, with periodical recurrence of accent; the measured beat or pulse which marks the character and expression of the music; symmetry of movement and accent.
n. - A division of lines into short portions by a regular succession of arses and theses, or percussions and remissions of voice on words or syllables.
n. - The harmonious flow of vocal sounds.