pentameter

PENTAM'ETER, n. [Gr. five, and measure.] In ancient poetry, a verse of five feet. The two first feet may be either dactyls or spondees; the third is always a spondee, and the two last anapests. A pentameter verse subjoined to a hexameter, constitutes what is called elegiac.

PENTAM'ETER, a. Having five metrical feet.