a stanza or poem or six lines: • aaabab: the Robert Burns stanza; • ababcc: For example, Shakespeare's Venus and Adonis and William Wordsworth's 'I wandered lonely as a cloud.' • aabccb or aabaab: cf. Rime couée • cf. Sestina. Found on http://rpo.library.utoronto.ca/display_rpo/terminology.cfm#acatalectic
Sex'tain noun [ Latin sextus sixth, from sex six: confer Italian sestina .] (Pros.) A stanza of six lines; a sestine. Found on http://www.encyclo.co.uk/webster/S/78