The Collaborative International Dictionary of English v.0.48:

Eros \E"ros\, n. [L., fr. Gr. ? love, ? (personified) Eros, fr.
   ? to love.] (Greek Myth.)
   Love; the god of love; -- by earlier writers represented as
   one of the first and creative gods, by later writers as the
   son of Aphrodite, equivalent to the Latin god Cupid.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Eros
    n 1: (Greek mythology) god of love; son of Aphrodite; identified
         with Roman Cupid
    2: a desire for sexual intimacy [syn: sexual desire, eros,
       concupiscence, physical attraction]