A trench in the earth made by, or as by, a plow.
- A long, narrow, shallow trench made in the ground by a plow.
- A rut, groove, or narrow depression: snow drifting in furrows.
- A deep wrinkle in the skin, as on the forehead.
- To make long, narrow, shallow trenches in; plow.
- To form grooves or deep wrinkles in.
- To become furrowed or wrinkled.