a long narrow natural elevation or striation
"The hikers carefully stepped along the rocky ridge that separated two steep valleys."
any long raised strip
"The horse stumbled over a ridge of dry grass that ran across the path."
a long narrow natural elevation on the floor of the ocean
"The deep-sea submersible carefully navigated over the jagged ridge, revealing ancient volcanic formations hidden beneath the murky water."
any long raised border or margin of a bone or tooth or membrane
"The dentist pointed out that a small ridge on the patient's jawbone needed to be smoothed during surgery."
The back of any animal; especially the upper or projecting part of the back of a quadruped.
"The rider carefully adjusted his weight to balance along the horse's ridge as it leaped over the fence."
In plain English: A ridge is a long, narrow hilltop that looks like the back of an animal or the edge of a roof.
"The farmer rode his tractor along the ridge to check on the crops."
Usage: Use this term to describe the raised line along an animal's spine, such as the hump on a camel or the curve on a horse's neck. It specifically refers to that prominent physical feature rather than general body parts like shoulders or hips.
plough alternate strips by throwing the furrow onto an unploughed strip
"The farmer decided to ridge his field this season to improve drainage and keep weeds down between the crops."
form into a ridge
"After years of neglect, the once-flat meadow began to dry out and crack, eventually forming into a series of ridges that caught the wind."
To form into a ridge
"The heavy rain caused the soft earth to harden and form into a ridge along the fence line."
In plain English: To ridge something means to push it into a line of ridges or wrinkles.
"The gardener ridged the soil with a rake before planting the seeds."
A village in Hertsmere district, Hertfordshire, England.
"The local farmers near Ridge often gather at the market to sell their fresh produce on Saturdays."
The word "ridge" comes from Old English hryċġ, which originally meant the back or spine of a person. It traveled into modern usage to describe an elevated surface by extending this original meaning of a raised, curved line.