Ridges meaning : 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. The highest point on a roof, represented by a horizontal line where two roof areas intersect, running the length of the area. (fortifications) The highest portion of the glacis proceeding from the salient angle of the covered way. A chain of mountains. A chain of hills. A long narrow elevation on an ocean bottom. An elongated region of high atmospheric pressure.