couplet
nounUK /ˈkʌplət/
US /ˈkʌplət/
A couplet is two lines of a poem that go together.
The poem ends with a funny couplet that rhymes.
OTHER MEANINGS
2. Two things of the same kind that are joined or paired together.
The dancers moved as a couplet, always side by side.
3. A pair of equal-length lines in a song or poem that often rhyme at the end.
He wrote a couplet for his friend's birthday card.
4. In music, a pair of notes or phrases that are played together.
The song begins with a short couplet on the piano.