Rock, especially when used in construction.
A piece that is flat, broad, and fairly thick
Stone that has been left in its natural state, used typically to build walls, walks, etc.
Find another word for boulder. In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for boulder, like: stone, ledge, shakehole, slab, rock, , aven, ruckle, outcrop, fieldstone and crag.