the.com/standing stone

means A large upright stone deliberately erected by people in prehistoric times, often standing alone or as part of a monument, for reasons tied to ritual, memory, or marking a place as significant.

from The term is a plain descriptive compound — 'standing' plus 'stone' — used by antiquarians and archaeologists in English to name megaliths found across Europe, from Britain's lone moorland pillars to the long rows at Carnac in France. It has cousins in other languages describing the same acts: Breton 'menhir' (from men, 'stone,' and hir, 'long') was borrowed into archaeological English as a technical term for the same objects. No one left a manual explaining why these stones were raised — burial markers, boundary posts, ceremonial sites, and astronomical alignments are all argued for different examples — so the plain English name 'standing stone' has the virtue of saying only what is certain: someone stood it up, and it stayed.