grain

grain /ˈgreɪn/ noun
plural grains
grain
/ˈgreɪn/
noun
plural grains
Britannica Dictionary definition of GRAIN
1 
a  [noncount] : the seeds of plants (such as wheat, corn, and rice) that are used for food
also [count] : a single seed of wheat, corn, rice, etc.
b  : a plant that produces grain
[count]
[noncount]
2 
[count]
a  : a small, hard piece of something — see also take (something) with a grain of salt at 1salt
b  : a very small amount of something
3 
[count]
a  : the way the lines or fibers in something (such as wood) are arranged — usually singular
b  : the way that the surface of something feels when it is touched — usually singular
4 
[count] : a unit of weight equal to 0.0648 grams

against the grain

1 
◊ To be/go against the grain is to be different or to act in a way that is different from what is normal or usual.
2 
◊ If something goes against your grain, it does not seem right or natural to you.

— grained

/ˈgreɪnd/ adjective