Other forms: crags
A crag is a steep rugged mass of rock. A rocky crag, up the crag, crags above the valley.
It is exposed rock standing out from a hillside, and it is a climbers' and walkers' word — a crag is where the rock is worth going to. It appears throughout northern English and Scottish place names. Note craggy, which describes rock and, of a face, means strongly lined in a way meant as a compliment; and that crag is one of the few Celtic words English kept.
1nouncragA steep rugged mass of rock.
“An eagle's nest sat high on the crag above the valley.”
crag is a rock formation.
Middle English crag came from a Celtic source, related to Irish creig and Scottish Gaelic creag. English took very few words from Celtic, and most of those it did take are about landscape.
mga
crec
Middle English
crag
English, today
crag
Built from
From 13th century Middle English crag, from mga crec, a contracted form of mga carrac (compare Irish creig, Scottish Gaelic creag), possibly ultimately from the late Proto-Indo-European -/qfa-sub - kar (“stone, hard”); see also xcl քար (“stone”), Sanskrit खर (“hard, solid”), Welsh carreg (“stone”).
Etymology from Wiktionary, CC BY-SA