ĕpĭthălămĭum, ii, n., = ἐπιθαλάμιον,
a nuptial song , epithalamium , Treb. Poll. Gall. 11. Quintilian calls the wellknown Carmen nuptiale of Catullus (62) Epithalamium, Quint. 9, 3, 16.
·noun A nuptial song, or poem in honor of the bride and bridegroom. ...
Webster's Dictionary of the English Language