a long, narrow trench made in the ground by a plough, especially for planting seeds or irrigation

regular furrows in a ploughed field

fields of ridge and furrow

a line or wrinkle on a person's face

there were deep furrows in his brow

make a rut, groove, or trail in (the ground or the surface of something)

gorges furrowing the deep-sea floor

John's face was furrowed with tears

(with reference to the forehead or face) mark or be marked with lines or wrinkles caused by frowning, anxiety, or concentration

a look of concern furrowed his brow

his brows furrowed in concentration