B1 an area of low land between hills or mountains, often with a river running through it:
the Nile Valley
the Thames/Hudson valley
More examples
- The house occupies a commanding position at the top of the valley.
- Changing the course of the river would cause serious environmental damage to the whole valley.
- The path descended steeply into the valley.
- A whole valley was drowned when the river was dammed.
- People have lived in this valley since ancient times.
