Assonance

“Assonance: In poetry and prose, the identity of vowel sounds, as in the words scream and beech. Assonance is one of the many phonetic devices that serve to unify poetry and prose. In poetry it is frequently substituted for rhyme and, in this use, is sometimes referred to as vowel rhyme.”

Excerpted from: Murphy, Bruce, ed. Benet’s Reader’s Encyclopedia, Fourth Edition. New York: Harper Collins, 1996.