The part of a seed drill that makes the furrow for the seed.
A knife or cutter attached to the beam of a plow to cut the sward, in advance of the plowshare and moldboard.
A trench cut in the soil, as when plowed in order to plant a crop.
Any trench, channel, or groove, as in wood or metal.
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.