Noun food grain has 1 sense
  1. grain, food grain, cereal - foodstuff prepared from the starchy grains of cereal grasses
    --1 is a kind of foodstuff, food product
    --1 has particulars:
     corn, edible corn; grist; groats; millet; barley, barleycorn; buckwheat; wheat, wheat berry; oat; rice; wild rice, Indian rice; malt
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