grains

1.

give a rough surface or texture to.

:
her fingers were grained with chalk dust
2.

paint (something, especially furniture or interior surfaces) in imitation of the grain of wood or marble.

:
what is the use of having natural wood when you can grain it like that?
1.

wheat or any other cultivated cereal crop used as food.

2.

a single fruit or seed of a cereal.

:
a few grains of corn