The Collaborative International Dictionary of English v.0.48:

Verse \Verse\ (v[~e]rs), n. [OE. vers, AS. fers, L. versus a
   line in writing, and, in poetry, a verse, from vertere,
   versum, to turn, to turn round; akin to E. worth to become:
   cf. F. vers. See Worth to become, and cf. Advertise,
   Averse, Controversy, Convert, Divers, Invert,
   Obverse, Prose, Suzerain, Vortex.]
   1. A line consisting of a certain number of metrical feet
      (see Foot, n., 9) disposed according to metrical rules.
      [1913 Webster]

   Note: Verses are of various kinds, as hexameter,
         pentameter, tetrameter, etc., according to the
         number of feet in each. A verse of twelve syllables is
         called an Alexandrine. Two or more verses form a
         stanza or strophe.
         [1913 Webster]

   2. Metrical arrangement and language; that which is composed
      in metrical form; versification; poetry.
      [1913 Webster]

            Such prompt eloquence
            Flowed from their lips in prose or numerous verse.
                                                  --Milton.
      [1913 Webster]

            Virtue was taught in verse.           --Prior.
      [1913 Webster]

            Verse embalms virtue.                 --Donne.
      [1913 Webster]

   3. A short division of any composition. Specifically:
      [1913 Webster]
      (a) A stanza; a stave; as, a hymn of four verses.
          [1913 Webster]

   Note: Although this use of verse is common, it is
         objectionable, because not always distinguishable from
         the stricter use in the sense of a line.
         [1913 Webster]
      (b) (Script.) One of the short divisions of the chapters
          in the Old and New Testaments.
          [1913 Webster]

   Note: The author of the division of the Old Testament into
         verses is not ascertained. The New Testament was
         divided into verses by Robert Stephens [or Estienne], a
         French printer. This arrangement appeared for the first
         time in an edition printed at Geneva, in 1551.
         [1913 Webster]
      (c) (Mus.) A portion of an anthem to be performed by a
          single voice to each part.
          [1913 Webster]

   4. A piece of poetry. "This verse be thine." --Pope.
      [1913 Webster]

   Blank verse, poetry in which the lines do not end in
      rhymes.

   Heroic verse. See under Heroic.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alexandrine \Al`ex*an"drine\, n. [F. alexandrin.]
   A kind of verse consisting in English of twelve syllables.
   [1913 Webster]

         The needless Alexandrine ends the song,
         That, like a wounded snake, drags its slow length
         along.                                   --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alexandrine \Al`ex*an"drine\ (?; 277), a.
   Belonging to Alexandria; Alexandrian. --Bancroft.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Alexandrine
    n 1: (prosody) a line of verse that has six iambic feet