[n] a rhythmic group of six lines of verse
[n] a musical composition written for six performers
[n] a set of six similar things considered as a unit
[n] six performers or singers who perform together
[n] the cardinal number that is the sum of five and one
A stanza comprising of six lines e.g. The Castaway by William Cowper. A sestet is also the last six lines of a sonnet - following the octave. See sonnet.
6, Captain Hicks, half a dozen, hexad, sextet, sextet, sextet, sextette, sextette, sextuplet, sise, six, sixer, VI
composition, digit, figure, musical composition, musical group, musical organisation, musical organization, opus, piece, piece of music, set, stanza