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oat

/ɔːt/ · oat
noun
  1. A grain used to make oatmeal, oat flour, or as animal feed. She cooked oatmeal with milk and honey for breakfast.
  2. A type of grass, Avena sativa, that produces edible seeds. The oat fields were harvested in the fall.
  3. A unit of measurement, especially in the UK, equal to one-sixteenth of a quarter of a ton. The farmer sold his oats at the market.

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Did you know? Oats are a cool-season crop, meaning they grow best in the cooler temperatures of spring or fall, and are often used as a cover crop to prevent soil erosion.

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Written by Lexi Wordsworth, Dictionary Editor 1 lookups Added Jul 30, 2026