1. a small hard seed from a cereal plant such as wheat, rice, or corn
2. cereal plants or their seeds collectively
3. a small particle of a substance such as sand or salt

1. to give a rough texture to a surface

Examples

• The farmer harvested grain from his wheat fields.
• She found a grain of sand in her shoe after the beach trip.
• The wood grain runs vertically along the board.
• There isn’t a grain of truth in that story.
• The carpenter grained the surface to prepare it for staining.
• Rice is the most important grain in many Asian countries.
• Salt grains scattered across the table.
• He cut the wood along the grain to prevent splitting.