Monolith (noun)

1. A single large block of stone, typically one that has been shaped or carved into a specific form.
2. A large, imposing, and unchanging structure or institution, often perceived as having a powerful influence.

Origin:

From the greek word "monos" meaning "single" and "lithos" meaning "stone".

Examples:

1. The monolith at Stonehenge is a large stone structure that was erected in prehistoric times.
2. A monolith is a large structure that has been carved out of a single piece of stone.
3. The company is a monolith in the industry and has been around for decades.
4. A monolithic government is one that is perceived to be unchanging and unresponsive to change.
5. The monolith at the city center is a popular tourist attraction.