Grainer

Noun

1. A knife for taking the hair off skins.
2. 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.
3. One who grains (paints in imitation of the grain of wood, marble, etc).
4. A brush or tool used for such painting.
5. A grain car.