Shaker

Noun

 * 1) A person or thing that shakes, or by means of which something is shaken.
 * 2) A variety of pigeon.
 * 3) One who holds railroad spikes while they are hammered.
 * 4) A musical percussion instrument filled with any of various granular solids used to produce a rhythmyc sound when shaken.

Derived terms

 * cocktail shaker
 * salt shaker