Couplet

Definition: Couplets are two lines of poetry that don't need to ryhme all the time, but usually do.

Example:

Silly Sally
When Silly Sally irons her clothes, they come out looking awful.
She did not read the label and her iron was meant to waffle.

By Denise Rodgers
Significance:  Couplets are important in poetry because the occasional rhymes makes it more fun to read and reading poetry should be fun.