Source : Webster's Revised Unabridged Dictionary (1913)

Hymn \Hymn\, v. t. [imp. & p. p. {Hymned}; p. pr. & vb. n.
   {Hymning}.] [Cf. L. hymnire, Gr. ?.]
   To praise in song; to worship or extol by singing hymns; to
   sing.

         To hymn the bright of the Lord.          --Keble.

         Their praise is hymned by loftier harps than mine.
                                                  --Byron.