hendecasyllable, hen′dek-a-sil-a-bl, n. a metrical line of eleven syllables.
Therefore, nothing very distinct can be asserted about the origin of the hendecasyllable iambic line, which marks Italian poetry.
They first employed the Italian hendecasyllable, although it did not become acclimated till the days of Boscn.
Endechas reales are cuartetas in which three heptasyllables are followed by a hendecasyllable.