a long narrow natural elevation or striation
any long raised strip
a long narrow natural elevation on the floor of the ocean
a long narrow range of hills
any long raised border or margin of a bone or tooth or membrane
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
extend in ridges
plough alternate strips by throwing the furrow onto an unploughed strip
throw soil toward (a crop row) from both sides
spade into alternate ridges and troughs
form into a ridge
- Erosion has truncated the ridges of the mountains.
- Ridges occur in humid regions along belts of resistant rocks.