Definition of shaker
1
: one that shakes: such as
a
: a utensil or machine used in shaking
- cocktail shaker
b
: one that incites, promotes, or directs action
- a mover and shaker
2
capitalized
[from a dance with shaking movements performed as part of worship]
: a member of a millenarian sect originating in England in 1747 and practicing celibacy and an ascetic communal life
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