Ep`i*tha*la"mi*um (?), n.; pl. Epithalamiums (#), L. Epithalamia (#). [L., fr. Gr. , orig. an adj., nuptial; upon, at + bride chamber.]
A nuptial song, or poem in honor of the bride and bridegroom.
The kind of poem which was called epithalamium . . . sung when the bride was led into her chamber.
© Webster 1913.