Ridge \Ridge\, n. [OE. rigge the back, AS. hrycg; akin to D. rug, G. r["U]cken, OHG. rucki, hrukki, Icel. hryggr, Sw. rugg, Dan. ryg. [root]16.]

1. The back, or top of the back; a crest. --Hudibras.

2. A range of hills or mountains, or the upper part of such a range; any extended elevation between valleys. ``The frozen ridges of the Alps.'' --Shak.

Part rise crystal wall, or ridge direct. --Milton.

3. A raised line or strip, as of ground thrown up by a plow or left between furrows or ditches, or as on the surface of metal, cloth, or bone, etc.

4. (Arch.) The intersection of two surface forming a salient angle, especially the angle at the top between the opposite slopes or sides of a roof or a vault.

5. (Fort.) The highest portion of the glacis proceeding from the salient angle of the covered way. --Stocqueler.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Ridge \Ridge\, v. t. [imp. & p. p. Ridged; p. pr. & vb. n. Ridging.]

1. To form a ridge of; to furnish with a ridge or ridges; to make into a ridge or ridges.

Bristles ranged like those that ridge the back Of chafed wild boars. --Milton.

2. To form into ridges with the plow, as land.

3. To wrinkle. ``With a forehead ridged.'' --Cowper.

Source: Webster's Revised Unabridged Dictionary (1913)