Double rhyme matches the final two syllables of two words, usually with the stress on the next-to-last syllable. Words such as spender and slender rhyme this way, and poets use double rhymes to create a fuller, more musical sound than a single-syllable rhyme.
Example
The baker laughed at the end of the day,
counting the coins that were slender and gray.
He hummed to himself as he turned off the light,
then vanished from sight at the close of the night.