Couplet

A couplet is two lines of poetic verse that present a single concept or idea. The lines usually rhyme and have the same poetic meter. A good example is the following conclusion to a sonnet by Edna St. Vincent Millay:

“  |  Whether or not we find what we are seeking
is idle, biologically speaking.  |  ”

|
|

A heroic couplet is a couplet with iambic pentameter.