Ridge

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

a long narrow range of hills

a long narrow natural elevation on the floor of the ocean

a long narrow natural elevation or striation

any long raised border or margin of a bone or tooth or membrane

any long raised strip

extend in ridges

spade into alternate ridges and troughs

throw soil toward (a crop row) from both sides

form into a ridge

plough alternate strips by throwing the furrow onto an unploughed strip