Rubaiyat \Ru*bai*yat"\, n. pl.; sing. {Rubai}. [Ar.
rub[=a]'iy[=a]h quatrian, pl. of rub[=a]'iy having four
radicals, fr. rub[=a]' four.]
Quatrians; as, the Rubaiyat of Omar Khayyam. Sometimes in pl.
construed as sing., a poem in such stanzas.
[Webster 1913 Suppl.]