Source : Webster's Revised Unabridged Dictionary (1913)

Threnody \Thren"o*dy\, n. [Gr. ?; ? a dirge + ? a song. See
   {Threne}, and {Ode}.]
   A song of lamentation; a threnode. --Sir T. Herbert.

Source : WordNet®

threnody
     n : a song or hymn of mourning composed or performed as a
         memorial to a dead person [syn: {dirge}, {coronach}, {lament},
          {requiem}]