WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a steep rugged rock or cliff
Word Usage
"The music and musicians at Zakopane's second annual On The Heights chamber music festival were intoxicating, the weather was so free of clouds that you could see the great mountain crag that towers 2000 meters above the city, reachable only by ski lift, cable car and climbers."