ridge noun [ C ] us / rɪdʒ / Add to word list a long, narrow, raised part of a surface, esp. a high edge of a hill or mountain: a mountain ridge Plowed ridges looked like stripes across the field. A ridge of high pressure is a narrow air mass that brings good weather.

: a raised or elevated part or area: as a : a range of hills or mountains b : the line made where two sloping surfaces come together the ridge of a roof

A ridge is a long, narrow, elevated geomorphologic landform, structural feature, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the crest or ridgecrest, with the terrain dropping down on either side. The crest, if narrow, is also called a ridgeline.