Webster’s Revised Unabridged Dictionary · 1913
Choriambus
Cho′ri·am′bus (·ăm′bŭs), n.; pl. L. Choriambi (#), E. Choriambuses (#). [L. choriambus, Gr. χορίαμβος; χορεῖος a choreus + ἴαμβος iambus.] (Anc. Pros.) A foot consisting of four syllables, of which the first and last are long, and the other short (- ⌣ ⌣ -); that is, a choreus, or trochee, and an iambus united.