Definition of "grainer"

A knife for taking the hair off skins.  examples

An infusion of pigeon's dung used by tanners to neutralize the effects of lime and give flexibility to skins; -- called also grains and bate.  examples

One who grains (paints in imitation of the grain of wood, marble, etc).  examples

A brush or tool used for such painting.  examples

(rail transportation, US) A type of railroad car that carries grain.  examples