iambus

n. (pl. -buses or -bi) metrical foot consisting of one short followed by one long syllable (&iambus.). [greek, = lampoon]

n. A foot consisting of a short syllable followed by a long one, as in /mans, or of an unaccented syllable followed by an accented one, as invent; an iambic. See the Couplet under Iambic, n.