v.
 (past shook; past part. shaken)
    - tremble or vibrate or cause to do so. ▸tremble uncontrollably with strong emotion. 
- move forcefully or quickly up and down or to and fro. ▸remove from something by shaking. ▸brandish in anger or as a warning. 
- shock or astonish. ▸shock (someone) into a change of mood or attitude. 
- 
(often shake someone/thing off)
 get rid of or put an end to.
n.
    - an act of shaking. ▸an amount sprinkled from a container. 
- informal a milkshake.
- 
(the shakes)
 informal a fit of trembling or shivering.
- Music  a trill.
Phrase
  
    - be shook on
 Austral./NZ be keen on or enthusiastic about.
- get 
(or give someone)
 a fair shake
 N. Amer. informal get (or give someone) fair treatment.
- in two shakes 
(of a lamb's tail)
 informal very quickly.
- no great shakes
 informal not very good or significant.
- shake a leg
 informal make a start; rouse oneself.
 
  Phrase verbal
  
    - shake down
 settle down.
- shake someone down
 N. Amer. informal extort money from someone.
- shake on
 informal confirm (an agreement) by shaking hands.
- shake someone up
 rouse someone from lethargy or apathy.
- shake something up
 make radical changes to an institution or system.
 
  Etymology
  OE sc(e)acan (v.), of Gmc origin.