I wrote tons of sonnets, and got really decent at iambic octameter/pentameter.    From Wordnik.com.  [mousepoet Diary Entry] Reference

Verses of seven and eight feet are rare; they are called heptameter and octameter, respectively.    From Wordnik.com.  [English: Composition and Literature] Reference

The heptameter is usually divided into a tetrameter and a trimeter; the octameter, into two tetrameters.    From Wordnik.com.  [English: Composition and Literature] Reference

I'm going full-out: trochaic octameter (I am too verbose for iambic pentameter) with internal and cross-line rhyme.    From Wordnik.com.  [MentalPolyphonics] Reference

” The former is trochaic—the latter is octameter acatalectic, alternating with heptameter catalectic repeated in the refrain of the fifth verse, and terminating with tetrameter catalectic.    From Wordnik.com.  [The Philosophy of Composition] Reference

D.), while the latter kind can naturally only occur in those circles whose couplet forms an octameter (A. E.).    From Wordnik.com.  [Arabian nights. English] Reference