Distich

A distich is a two-line verse poem, or two closed lines of verse within a longer poem.

Definition
Distich (distich) n.	(?) Dis"tich [L. distichon, Gr. (?), neut. of (?) with two rows, of two verses; di- = di`s- twice + (?) row, verse, fr. (?) to ascend; akin to AS. st***imacr]gan to ascend: cf. F. distique. See A couple of verses or poetic lines making complete sense; an epigram of two verses. Distich, Webster's Revised Unabridged Dictioary, 1913. MShaffer.com, Web, Feb. 16, 2016.

Examples
The most prominent example of a distich in English poetry is the heroic couplet, which was the dominant verse form in England during the early 18th century.