rigole

Etymology 1
, from, from.

Noun

 * 1)  furrow, channel small trench cut in the soil or rock for irrigation or for planting seeds
 * 2)  groove, fissure, hollow naturally occurring depression or furrow, often due to a meteorological event
 * 3)  furrow deep wrinkle, usually in the face
 * 4) rivulet, streamlet