Ridge  —n. 1 line of the junction of two surfaces sloping upwards towards each other (ridge of a roof). 2 long narrow hilltop, mountain range, or watershed. 3 any narrow elevation across a surface. 4 elongated region of high barometric pressure. 5 raised strip of esp. Ploughed land. —v. (-ging) mark with ridges.  ridgy adj. [old english]