Dictionary definition · grain
noun
- a relatively small granular particle of a substance"a grain of sand"
- foodstuff prepared from the starchy grains of cereal grasses
- the side of leather from which the hair has been removed
- a weight unit used for pearls or diamonds: 50 mg or 1/4 carat
- 1/60 dram; equals an avoirdupois grain or 64.799 milligrams
- 1/7000 pound; equals a troy grain or 64.799 milligrams
- dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn
- a cereal grass"wheat is a grain that is grown in Kansas"
verb
- thoroughly work in"His hands were grained with dirt"
- paint (a surface) to make it look like stone or wood
- form into grains
- become granular
Source: Open English WordNet (CC BY 4.0).