What does "ridge" mean?

Ridge: 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.

Additional senses

  1. 2.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.
  2. 3.(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.
  3. 4.(Fort.) The highest portion of the glacis proceeding from the salient angle of the covered way. Stocqueler.
  4. 5.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.
  5. 6.To form into ridges with the plow, as land.
  6. 7.To wrinkle. "With a forehead ridged." Cowper.

Sources