D defs.my
Entry 2 senses Webster, 1913

Sestet

· Ses·tet · IPA /sɛsˈtɛt/
01 n. A piece of music composed for six voices or six instruments; a sextet; -- called also sestuor.
  1. 1.
    A piece of music composed for six voices or six instruments; a sextet; -- called also sestuor.(Mus.) Also: sestuor
  2. 2.
    The last six lines of a sonnet.(Poet.)