A couplet is a pair of successive lines of verse, typically rhyming and of the same length.
Let’s try it with a couple of examples:
A couplet may be formal (or closed), in which case each of the two lines is end-stopped, or it may be run-on (or open), with the meaning of the first line continuing to the second (this is called enjambment). Couplets are most frequently used as units of composition in long poems, but, since they lend themselves to pithy, epigrammatic statements, they are often composed as independent poems or function as parts of other verse forms, such as the Shakespearean sonnet, which is concluded with a couplet.
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