ridge

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A long, narrow upper section or crest: the ridge of a wave.
2. n. A long, narrow chain of hills or mountains. Also called ridgeline.
3. n. A long, narrow elevation on the ocean floor.
4. n. Meteorology An elongated zone of relatively high atmospheric pressure. Also called wedge.
5. n. A long, narrow, or crested part of the body: the ridge of the nose.
6. n. The horizontal line formed by the juncture of two sloping planes, especially the line formed by the surfaces at the top of a roof.
7. n. A narrow, raised strip, as in cloth or on plowed ground.
8. v. To mark with, form into, or provide with ridges.
9. v. To form ridges.

Century Dictionary and Cyclopedia

1. n. The back of any animal; especially, the upper or projecting part of the back of a quadruped.
2. n. Any extended protuberance; a projecting line or strip; a long and narrow pile sloping at the sides; specifically, a long elevation of land, or the summit of such an elevation; an extended hill or mountain.
3. n. In agriculture, a strip of ground thrown up by a plow or left between furrows; a bed of ground formed by furrow-slices running the whole length of the field, varying in breadth according to circumstances, and divided from another by gutters or open furrows, parallel to each other, which last serve as guides to the hand and eye of the sower, to the reapers, and also for the application of manures in a regular manner. In wet soils they also serve as drains for carrying off the surface-water. In Wales, formerly, a measure of land, 20 ¼ feet.
4. n. The highest part of the roof of a building; specifically, the meeting of the upper ends of the rafters. When the upper ends of the rafters abut against a horizontal piece of timber, it is called a ridgepole. Ridge also denotes the internal angle or nook of a vault. See cut under roof.
5. n. In fortification, the highest portion of the glacis, proceeding from the salient angle of the covered way.
6. n. In anatomy and zoology, a prominent border; an elevated line, or crest; a lineal protuberance: said especially of rough elevations on bones for muscular or ligamentous attachments: as, the superciliary, occipital, mylohyoid, condylar, etc., ridges.
7. n. A succession of small processes along the small abaft the hump of a sperm-whale, or the top of the back just forward of the small. The ridge is thickest just around the hump. See scrag-whale.
8. n. One of the several linear elevations of the lining membrane of the roof of a horse's mouth, more commonly called bars. Similar ridges occur on the hard palate of most mammals.
9. To cover or mark with ridges; rib.
10. To rise or stretch in ridges.

Wiktionary

1. n. anatomy The back of any animal; especially the upper or projecting part of the back of a quadruped.
2. n. Any extended protuberance; a projecting line or strip.
3. n. The line along which two sloping surfaces meet which diverge towards the ground.
4. n. Highest point on a roof, represented by a horizontal line where two roof areas intersect, running the length of the area.
5. n. A chain of mountains.
6. n. A chain of hills.
7. n. A long narrow elevation on an ocean bottom.
8. n. meteorology A type of warm air that comes down on to land from mountains.
9. v. transitive To form into a ridge
10. v. intransitive To extend in ridges

GNU Webster's 1913

1. n. The back, or top of the back; a crest.
2. n. A range of hills or mountains, or the upper part of such a range; any extended elevation between valleys.
3. n. 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. n. (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. n. (Fort.) The highest portion of the glacis proceeding from the salient angle of the covered way.
6. v. To form a ridge of; to furnish with a ridge or ridges; to make into a ridge or ridges.
7. v. To form into ridges with the plow, as land.
8. v. To wrinkle.

WordNet 3.0

1. n. any long raised border or margin of a bone or tooth or membrane
2. v. throw soil toward (a crop row) from both sides
3. v. extend in ridges
4. v. plough alternate strips by throwing the furrow onto an unploughed strip
5. v. spade into alternate ridges and troughs
6. n. a long narrow natural elevation on the floor of the ocean
7. n. a long narrow range of hills
8. n. a long narrow natural elevation or striation
9. n. any long raised strip
10. n. a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters
11. v. form into a ridge