The Collaborative International Dictionary of English v.0.48:

Monody \Mon"o*dy\, n.; pl. Monodies. [L. monodia, Gr. ?, fr. ?
   singing alone; mo`nos single + ? song: cf. F. monodie. See
   Ode.]
   A species of poem of a mournful character, in which a single
   mourner expresses lamentation; a song for one voice.
   [1913 Webster]