shake Copy link Outline 1. quassātio2. or expr. by verb • shake ; shaking subs.: 1. quassātio: the s. of their heads, capitum q., Liv. 22., 17, init. 2. or expr. by verb: v. to shake: he gave him a hearty s. of the hand, *manum ejus effusissime amantissimeque compressam tenuit.