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Ru*bai*yat" (?), n. pl.; sing. Rubai (&?;). [Ar. rubA'iyAh quatrian, pl. of rubA'iy having four radicals, fr. rubA' four.]
Quatrians; as, the Rubaiyat of Omar Khayyam. Sometimes in pl. construed as sing., a poem in such stanzas.
© Webster 1913