rillmark

Example:The rain made numerous furrows and rillmarks in the freshly plowed field.

Definition:A long, narrow trench made in the soil by a plow, or any reflective line or groove, especially on smooth surfaces.

Example:Water had carved deep gouges and rillmarks into the hillsides, making the ground unstable.

Definition:A groove or channel formed by a tool or by erosion, typically deep and wide.