The Collaborative International Dictionary of English v.0.48:
Epos \Ep"os\, n. [L., fr. Gr. ?.] An epic. [1913 Webster]WordNet (r) 3.0 (2006):
epos n 1: a body of poetry that conveys the traditions of a society by treating some epic theme 2: a long narrative poem telling of a hero's deeds [syn: epic poem, heroic poem, epic, epos]