Obs. [n. of action from L. *concussāre, freq. of concutĕre not recorded, but cf. It. concussare: see CONCUSS v.).] Violent shaking or agitation.
1641. Bp. Hall, Serm., Rem. Wks. (1660), 68. When he feels any vehement concussations of government. Ibid. (1645), Peacemaker, § 8 (R.). A subterraneous fire … which after some astonishing concussation breaks furiously out.
