nRedondillared-on-dē′lya an early form of versification in which the 1st and 4th and the 2d and 3d lines of the stanza generally rhymed: in later Spanish use, a term applied to verses of 6 and 8 syllables in general, whether making perfect rhymes or assonances only.
Chambers's Twentieth Century Dictionary
Sp.,—L. rotundus, round.
He hath good skill with the lute, and he has in his memory a thousand redondillas, with which he may divert the leisure of my lord.