quassātĭo, ōnis, f. [quasso],
I a shaking : capitum, Liv. 22, 17, 3: cymbalorum, a striking together , beating , Arn. 7, 237: quassationes, shakings of the body , Macr. S. 7, 15, 9. —
II A disturbance , affliction : cessavit quassatio, Vulg. Psa. 105, 30.