What is the meaning of Furrow?

Any trench, channel, or groove; often found on wood or metal.

1. A trench cut in the soil, as when plowed in order to plant a crop.

   A trench cut in the soil, as when plowed in order to plant a crop.

   A deep wrinkle in the skin of the face, especially on the forehead.

   To cut one or more grooves in (the ground, etc.).

   To wrinkle.

   To pull one's brows or eyebrows together due to concentration, worry, etc.

   to become furrowed

   Source: wiktionary.org