The Collaborative International Dictionary of English v.0.48:

AEneid \[AE]*ne"id\, n. [L. Aeneis, Aeneidis, or -dos: cf. F.
   ['E]n['e]ide.]
   The great epic poem of Virgil, of which the hero is [AE]neas.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Aeneid
    n 1: an epic in Latin by Virgil; tells the adventures of Aeneas
         after the Trojan War; provides an illustrious historical
         background for the Roman Empire