ridge

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; "The land ridges towards the South"

plough alternate strips by throwing the furrow onto an unploughed strip

throw soil toward (a crop row) from both sides; "He ridged his corn"

spade into alternate ridges and troughs; "ridge the soil"

form into a ridge