High Quality Content by WIKIPEDIA articles! Octameter in poetry is a line of eight metrical feet. It is not very common in English verse. E.g: - Trochaic Once upon a midnight dreary, while I pondered, weak and weary Over many a quaint and curious volume of forgotten lore- While I nodded, nearly napping, suddenly there came a tapping As of some one gently rapping, rapping at my chamber door (Edgar Allan Poe, "The Raven")