Emily Dickinson Lexicon

EP-I-THA-LA'MI-UM, or EP-I-THAL'A-MY, n. [Gr. επιθαλαμιον; επι and θαλαμος, a bed-chamber.]

A nuptial song or poem, in praise of the bride and bridegroom, and praying for their prosperity. The forty-fifth Psalm is an epithalamium to Christ and the church. Burnet.