A sestet is a six-line stanza. In a sonnet, the sestet is also the final six lines of an Italian or Petrarchan sonnet, following the octave and often shifting the poem's idea, tone, or argument.
Example
The rain held still above the hill,
The road was dark with pine.
A single light began to rise,
And gave the fields a line.
What seemed like loss turned, by degrees,
To morning in the trees.
Related Definitions
[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
Synonyms
6, Captain Hicks, half a dozen, hexad, sextet, sextet, sextet, sextette, sextette, sextuplet, sise, six, sixer, VI