A high area; land that is higher than surrounding areas.
The highest point on a roof, represented by a horizontal line where two roof areas intersect, running the length of the area.
A chain of hills.
A chain of mountains.
The back of any animal; especially the upper or projecting part of the back of a quadruped.
Any extended protuberance; a projecting line or strip.
The line along which two sloping surfaces meet which diverge towards the ground.
A long narrow elevation on an ocean bottom.
The highest portion of the glacis proceeding from the salient angle of the covered way.
An elongated region of high atmospheric pressure.
To form into a ridge
To extend in ridges