valley

noun3

1. •
   a long, low area of land with hills or mountains on both sides

   • The Indus River valley was the site of an ancient civilization.
2. •
   Any structure resembling one, e.g. the interior angle formed by the intersection of two sloping roof planes.
3. •
   An area which drains itself into a river.

verb1

1. •
   (literary, rare) To form the shape of a valley.

   • These hues of red rose and green and pale green, ruffled and pouted in the billowy white of the dress ballooning and valleying softly, like a yacht before the sail bends low; […] — 1879

noun1

1. •
   Ellipsis of the San Fernando Valley: a valley of southern California, United States.

   • The Valley is getting downright cosmopolitan, but it’s unlikely the region will ever completely morph into a hip haven. — 2006