Prosody
இயைபு
Iyaipu
Explanation
A தொடை type: the last letter or syllable of each line rhymes with the others, similar to end-rhyme in English verse.
Story
Read a Tamil devotional song and the same ending repeated at the close of each line is இயைபு doing exactly what English end-rhyme does in a nursery rhyme.
Example
Lines ending in "-ான்" repeated across a verse.