noun
huge rock; crag
Refers to a very large rock or boulder, often in natural settings like mountains or coasts.
海岸に巨岩がそびえている。
A huge rock towers over the coast.
登山道の途中に巨岩がいくつもあった。
There were many huge rocks along the mountain trail.
Compound of 巨 (きょ, 'huge') and 岩 (がん, 'rock'). The reading きょがん is the standard on'yomi combination.