We found 3 dictionaries that define the word peaks and valleys:

General (3 matching dictionaries)

1. peaks and valleys: Merriam-Webster
2. Peaks and Valleys, Peaks and Valleys: Wikipedia, the Free Encyclopedia

Definitions from Wikipedia (Peaks and Valleys) ▸ noun:  a Canadian Thoroughbred racehorse. ▸ Words similar to peaks and valleys ▸ Usage examples for peaks and valleys ▸ Idioms related to peaks and valleys ▸ Wikipedia articles (New!) ▸ Words that often appear near peaks and valleys ▸ Rhymes of peaks and valleys ▸ Invented words related to peaks and valleys