Cynhanedd
Merriam Webster defines Cyndhanedd (pronounced kung-han-eth) as "a strict intricate system of alliteration and rhyme used in Welsh poetry." It was developed by the 14th century and codified in the Caerwys Eisteddfod (Assembly of Bards) of 1523. In Welsh poetry, it's an elaborate system of sound relationships involving accent, alliteration and internal rhyme, and comes in [...]