Source : Webster's Revised Unabridged Dictionary (1913)

Epos \Ep"os\, n. [L., fr. Gr. ?.]
   An epic.

Source : WordNet®

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}]