Meaning of hanging valley

hang'ing val'ley

Pronunciation: [key]
  1. a valley, the lower end of which opens high above a shore, usually caused by the rapid erosion of a cliff.
  2. a tributary valley whose mouth is set above the the floor of the main valley, usually as a result of differences in glacial erosion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.