I·am·bic a.
  1. Pros. Consisting of a short syllable followed by a long one, or of an unaccented syllable followed by an accented; as, an iambic foot.
  2. Pertaining to, or composed of, iambics; as, an iambic verse; iambic meter. See Lambus.
  I·am·bic, n.
  1. Pros. (a) An iambic foot; an iambus. (b) A verse composed of iambic feet.
  Note: ☞ The following couplet consists of iambic verses.
  Thy gen- | ius calls | thee not | to pur- | chase fame
  In keen | iam- | bics, but | mild an- | agram.   --Dryden.
  2. A satirical poem (such poems having been anciently written in iambic verse); a satire; a lampoon.
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  iambic
       adj : of or consisting of iambs; "iambic pentameter"
       n : a verse line consisting of iambs