At one time or another, there's been a chalk mark made here.
It didn't seem to her that a chalk mark was going to be much protection against anything.
It was now almost too dark to see any chalk marks.
He kept it always at the same level by following a chalk mark drawn along the rock wall.
He put a yellow chalk mark on the door beside them.
Ruth didn't need the chalk mark to know where the dead spot was.
When you leave the store, make a chalk mark on the door.
The problem, you see, is that we cannot tell the difference between one chalk mark and another.
Next to the chalk mark he'd made on the wall was a black design in some unknown substance.
The visitor hasn't moved and it still is pointing at the chalk mark.
