Definition of spreaders:
(n) :
An object or person who spreads.
(n) :
A device used to spread bulk material.
(n) :
A knife or spatula used to distribute a substance such as butter or jelly.
(n) :
A spacer or device for keeping two objects apart.
(n) :
(nautical) A horizontal athwartships spar attached to the mast of a sailboat in order to extend the shrouds away from the mast.
(n) :
A machine for combining and drawing fibers of flax to form a sliver preparatory to spinning.