megalith
/ˈmegəlɪθ/noun
- Archaeology a large stone that forms a prehistoric monument (e.g. a standing stone) or part of one (e.g. a stone circle or chambered tomb)【考古】史前巨石（构成史前遗迹, 如巨石柱, 或作为遗迹的部分, 如巨石阵或石墓等）。
词源
mid 19th cent.: back-formation from MEGALITHIC.