Final answer:
Alliteration is a sound device used in poetry where the initial sounds of words are repeated. It creates a musical quality and helps emphasize certain words or phrases.
Step-by-step explanation:
In poetry, alliteration is used as a sound device. Alliteration refers to the repetition of the initial sounds of words in a line or stanza of poetry. It creates a musical quality and helps to emphasize certain words or phrases. For example, in the line 'Peter Piper picked a peck of pickled peppers,' the repetition of the 'p' sound is an example of alliteration.
Learn more about Sound devices in poetry