Source : Webster's Revised Unabridged Dictionary (1913)

Hymen \Hy"men\, n. [Gr. ? skin, membrane.] (Anat.)
   A fold of muscous membrane often found at the orifice of the
   vagina; the vaginal membrane.

Hymen \Hy"men\, n. [L., fr. Gr. ?.]
   1. (Class Myth.) A fabulous deity; according to some, the son
      of Apollo and Urania, according to others, of Bacchus and
      Venus. He was the god of marriage, and presided over
      nuptial solemnities.

            Till Hymen brought his love-delighted hour, There
            dwelt no joy in Eden's rosy bower.    --Campbell.

   2. Marriage; union as if by marriage.

            Hymen of element and race.            --Emerson.

Source : WordNet®

Hymen
     n 1: (Greek mythology) the god of marriage
     2: a fold of tissue that partly covers the entrance to the
        vagina of a virgin [syn: {maidenhead}, {virginal membrane}]