Lewis Short
(verb) : dĕ-armo, āvi, ātum, l
* Aliquem, to disarm (except in particip., late Lat. for armis spoliare): dearmatus exercitus,Liv. 4. 10, 7.
* Aliquid, to deprive of power, blunt: pharetram expilet, sagittas dearmet,App. M. 5, p. 172, 25.
Charlton T. Lewis, Charles Short, A Latin Dictionary