greatboulder
nounUK /ˌɡreɪt ˈbəʊldə/
US /ˌɡreɪt ˈboʊldər/
A greatboulder is a very big rock.
The children climbed onto the greatboulder near the river.
OTHER MEANINGS
2. A large stone that has been worn smooth by weather or water.
A greatboulder sat at the edge of the beach, polished by the waves.
3. A heavy obstacle that is hard to move or get past.
The fallen tree was a greatboulder in the path of the hikers.
4. A person who is very steady and dependable.
Grandpa is a greatboulder for our family when times get tough.