rhythm

rhythm is a Noun

Definition:

[1] 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.

[2] 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. Moore (Encyc. )

[3] 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.

[4] The harmonious flow of vocal sounds.