to shake forcibly; esp. formerly, to shake (a patient) from side to side in order to detect a liquid in some body cavity, esp. in the thorax
Origin of succuss; from Classical Latin succussus, past participle of succutere, to toss up ; from sub-, under + quatere, to shake: see quash
(third-person singular simple present succusses, present participle succussing, simple past and past participle succussed)
From Latin succutere (“to shake up"), from sub- + quatere (“to shake").