
RUBAIYAT
The Rubaiyat is a Persian form of several quatrains. Its name derives from the Arabic plural of the word for "quatrain". This, in turn, comes from the Arabic Rubá, meaning "four."
This Persian form of poetry is a series of rhymed quatrains. In each quatrain, all lines rhyme except the third, leading to this pattern:
a
a - 2nd line rhymes with the first.
b
a - 4th line rhymes with the first and second