[ses.ti.na] n [It, fr. sesto sixth] (ca. 1586): a lyrical fixed form consisting of six 6-line usu. unrhymed stanzas in which the end words of the first stanza recur as end words of the following five stanzas in a successively rotating order and as the middle and end words of the three verses of the concluding tercet
SESTINA
Meaning of SESTINA in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012