Alliteration
Peter Piper picked a peck of pickled peppers.
Definition
The occurrence of the same letter or sound at the beginning of adjacent or closely connected words.
Example 1.
Peter Piper picked a peck of pickled peppers.
Example 2.
Fuzzy Wuzzy was a bear. Fuzzy Wuzzy had no hair. Fuzzy Wuzzy wasn't very fuzzy was he?
Example 3.
Sally sells sea shells by the sea shore.