The Collaborative International Dictionary of English v.0.48:

Hymen \Hy"men\, n. [Gr. "ymh`n skin, membrane.] (Anat.)
   A fold of muscous membrane often found at the orifice of the
   vagina in virgins; the vaginal membrane. It is usually torn
   by sexual intercourse.
   [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            Till Hymen brought his love-delighted hour,
            There dwelt no joy in Eden's rosy bower. --Campbell.
      [1913 Webster]

   2. Marriage; union as if by marriage.
      [1913 Webster]

            Hymen of element and race.            --Emerson.

WordNet (r) 3.0 (2006):

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: hymen, maidenhead, virginal
       membrane]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "hymen":
   Gretna Green wedding, allantoic membrane, amnion, amniotic sac,
   arachnoid membrane, banns, basement membrane, bridal, bridal suite,
   bridechamber, chuppah, church wedding, civil ceremony,
   civil wedding, conjuctiva, eardrum, elopement, epithalamium,
   espousals, espousement, forced marriage, honeymoon, hymeneal,
   hymeneal rites, maidenhead, marriage, membrana serosa,
   membrana tympana, membrane, meninges, meninx, neurilemma,
   nuptial apartment, nuptial mass, nuptial song, nuptials, pellicle,
   pericardium, perineurium, pleura, prothalamium, saffron veil,
   serosa, shotgun wedding, spousals, tympanic membrane, tympanum,
   velum, wedding, wedding canopy, wedding song, wedding veil



Moby Thesaurus II by Grady Ward, 1.0:

73 Moby Thesaurus words for "Hymen":
   Agdistis, Amor, Aphrodite, Apollo, Apollon, Ares, Artemis, Ate,
   Athena, Bacchus, Ceres, Cora, Cronus, Cupid, Cybele, Demeter,
   Despoina, Diana, Dionysus, Dis, Eros, Frigg, Gaea, Gaia, Ge,
   Great Mother, Hades, Helios, Hephaestus, Hera, Here, Hermes,
   Hestia, Hyperion, Jove, Juno, Jupiter, Jupiter Fidius,
   Jupiter Fulgur, Jupiter Optimus Maximus, Jupiter Pluvius,
   Jupiter Tonans, Kore, Kronos, Magna Mater, Mars, Mercury, Minerva,
   Mithras, Momus, Neptune, Nike, Olympians, Olympic gods, Ops, Orcus,
   Persephassa, Persephone, Phoebus, Phoebus Apollo, Pluto, Poseidon,
   Pronuba, Proserpina, Proserpine, Rhea, Saturn, Teleia, Tellus,
   Venus, Vesta, Vulcan, Zeus