In poetry, a dimeter is a metrical line of verse with two feet. The particular foot can vary.
Consider Thomas Hood's "Bridge of Sighs," in which the first line of a pair is of two feet, each composed of three syllables, and the subsequent line is of two feet, each of two syllables.
:Take her up \\ tenderly,
:Lift her \\ with care,
:Fashioned so \\ slenderly,
:Young and \\ so fair.
Also, the first line of William Wordsworth's "We Are Seven":
:A simp \\ le Child