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English definition of “grain”

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grain

noun  /ɡreɪn/ us  

grain noun (SEED)

[C/U] a seed from a plant, esp. a grass such as wheat, or the crop from such a plant: [C] Wheat and rye are two common grains used in making bread. [U] Grain is one of the main exports of the American Midwest.

grain noun (SMALL PIECE/AMOUNT)

[C] a very small piece of a hard substance, or a small amount of something: grains of sand There was a grain of truth in what she said. You haven’t got a grain of sense.

grain noun (PATTERN)

[U] the natural pattern of lines in the surface of a material, such as wood or rock, or the direction in which the fibers that form these substances lie: Polishing the wood brings out its grain.
(Definition of grain from the Cambridge Academic Content Dictionary © Cambridge University Press)
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