Source : Webster's Revised Unabridged Dictionary (1913)

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

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

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

Source : WordNet®

Alexandrine
     n : a line of verse that has six iambic feet