'continental divide' definitions:

Definition of 'continental divide'

(from WordNet)
noun
The watershed of a continent (especially the watershed of North America formed by a series of mountain ridges extending from Alaska to Mexico)

Definition of 'continental divide'

From: GCIDE
  • Divide \Di*vide"\, n. A dividing ridge of land between the tributaries of two streams; also called watershed and water parting. A divide on either side of which the waters drain into two different oceans is called a continental divide. [1913 Webster +PJC]