The Collaborative International Dictionary of English v.0.48:

Threne \Threne\, n. [L. threnus, Gr. ?. Cf. Drone.]
   Lamentation; threnody; a dirge. --Shak.
   [1913 Webster]

         The threns . . . of the prophet Jeremiah. --Jer.
                                                  Taylor.
   [1913 Webster] Threnetic