Lewis Short
dē-plango, nxi, 3
* V. a., to express grief by beating the breast; to bewail, lament (poet. and very rare): Cadmeida palmis Deplanxere domum,Ov. M. 4, 546; 14, 580; Sen. Herc. Oet. 1852: antiqua peccata,Hier. Jes. 1, 1, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary