boulderboulder /ˈboʊldɚ/ ●○○ noun [countable] 
a large stone or piece of rock: Two huge boulders blocked the road.
a large stone or piece of rock: Two huge boulders blocked the road.- Congo, the Democratic Republic of
- Congo, the Republic of
- congrats
- congratulate
- congratulation
- congratulatory
- congregant
- congregate
- congregation
- Congregational
- congregational
- Congregationalism
- Congregationalist
- congress
- congressional
- Congressional Budget Office, the
- congressional district
- congressman
- Congress of Racial Equality, the
- congresswoman
- congruence
- congruent
- congruently
- congruity
- congruous