ridge 
/ˈrɪʤ/ noun
plural ridg·es /ˈrɪʤ/ noun [count] 1 : a long area of land that is on top of a mountain or hill
▪ We hiked along the ridge. 2 : a raised part or area on the surface of something
▪ the ridges on the sole of a boot 3 : the place where two sloping surfaces meet
▪ the ridge of a roof 4 weather : a long area of high atmospheric pressure
▪ A ridge of high pressure is coming up from the south. — compare trough 4
▪ We hiked along the ridge.
▪ the ridges on the sole of a boot
▪ the ridge of a roof
▪ A ridge of high pressure is coming up from the south. — compare trough 4
