What is the meaning of Grainer?

A knife for taking the hair off skins.

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.

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

A brush or tool used for such painting.

A type of railroad car that carries grain.

to granulate

to seed

Source: wiktionary.org