I sat down on a concrete block below the back door.
It can be made of a large rock or a concrete block.
It looked to be made of concrete block or stone.
I hated feeling like a concrete block in the middle of the night.
The wall was concrete block, practically all the way up.
Wright turned to the concrete block as his new building material.
They were built in 1912 and are constructed of concrete block.
But for the last foot, along the outer wall, it wasn't concrete block.
I could have made a grab for the knife, sitting on the concrete block.
I sat on a concrete block and leaned my back against the trunk.