Rubai definitions

Rubai

1) Quatrain by Omar
Found on https://www.crosswordclues.com/clue/rubai

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Rubai

A quatrain with a rhyming scheme a-a-b-a e.g. the  Rubaiyat of Omar Khayyam by Edward Fitzgerald.
Found on http://www.poetsgraves.co.uk/glossary_of_poetic_terms.htm

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