Definition of: furrow

(fûr′ō) noun
1. A trench made in the earth by a plow.
2. One of the grooves in the face of a millstone.
3. Any groove or wrinkle.
4. Obs. A plowed field.
—v.t.
1. To make furrows in; plow.
2. To make wrinkles in, as the brow.
—v.i.
3. To become wrinkled. [OE furh]
—fur′row·er noun