ˈkəplə̇t noun
( -s )
Etymology: Middle French, diminutive of couple pair — more at couple
1. : two successive lines of verse usually having some unity greater than that of mere contiguity (as that provided by rhythmic correspondence, rhyme, or the complete inclusion of a grammatically or rhetorically independent utterance) : distich — see closed couplet , open couplet
2.
a. : pair , couple : a pair born together : twins
b. : a pair of items of the same kind occurring together
3. : a window of two lights
4. : one of the musical episodes alternating with the main theme (as in the early French rondos)