a long narrow cut in the ground, especially one made by a plough for planting seeds in 犁沟；沟；车辙 
dark ploughed earth, with white chalk in the furrows 深色犁过的土地，犁沟里有白色粉笔 Truck wheels had dug furrows in the track. 卡车车轮在轨道上挖了沟。 Water lay in the furrows of the ploughed fields. 在耕过的田野上，一道道犁沟积满了水。
a deep line in the skin of the face （脸上的）皱纹 Suddenly he looked tired and there were deep furrows in his brow. 突然，他看起来很累，额头上有深深的皱纹。
Word OriginOld English furh, of Germanic origin; related to Dutch voor and German Furche, from an Indo-European root shared by Latin porca ‘ridge between furrows’.
Idioms
plough a lonely, your own, etc., furrow
- (literary)
to do things that other people do not do, or be interested in things that other people are not interested in 自耕孤畴（指自行其是或自得其乐）