I. ˈrij noun
Etymology: Middle English rigge, from Old English hrycg; akin to Old High German hrukki ridge, back
Date: before 12th century
1. : an elevated body part or structure
2.
a. : a range of hills or mountains
b. : an elongate elevation on an ocean bottom
3. : an elongate crest or a linear series of crests
4. : a raised strip (as of plowed ground)
5. : the line of intersection at the top between the opposite slopes or sides of a roof
• ridged ˈrijd adjective
II. verb
( ridged ; ridg·ing )
Date: 1523
transitive verb
: to form into a ridge
intransitive verb
: to extend in ridges