sestet/sɛsˈtɛt/EtymologyFrom Italian sestetto, from sesto (“sixth”), Latin sextus, from sex (“six”).sestet means A piece of music composed for six voices or six instruments; a sextet or sestuor. Lexicurio rates it Distinctive — a strength score of 66 out of 100.nounA piece of music composed for six voices or six instruments; a sextet or sestuor.The last six lines of a sonnet, forming two stanzas of three lines each.