noun
steep, towering rock
Refers to a precipitous, imposing rock formation, often in natural landscapes. The term is somewhat literary or descriptive.
登山道の先に危岩がそびえていた。
A steep, towering rock rose ahead on the mountain trail.
Compound of 危 (dangerous, steep) and 岩 (rock). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.