巨石

1. Origins, structure, and basic meaning

• Structure: Written 巨石 and read きょせき, it denotes an exceptionally large and heavy stone or boulder.
• Basic usage: It is used for monumental stones and boulders blocking a mountain path.

2. Common pitfalls and similar expressions

• A discrete stone, not bedrock
  • It usually identifies one massive rock rather than an entire underlying rock layer.