move (an object) up and down or from side to side with rapid, forceful, jerky movements
she stood in the hall and shook her umbrella
they shook the sand out of their shoes
upset the composure or confidence of; shock or astonish
rumours of a further loss shook the market
the escalation in costs is certain to shake the confidence of private investors
successfully deal with or recover from (an illness, injury, or negative feeling)
I couldn't shake the feeling that everyone was laughing at me
I've had this cold that I just can't shake