EXAMPLES FROM THE WEB FOR FLATTEN
When they struck the stones they were heard to flatten and fall into the water.
You could flatten out a piece of iron with your little lady-like arms.
Flatten, and be careful, especially in turning down the corners.
They tried to flatten it with countless tons of concentration, but it 52 held its shape.
"Now come on, Jean, and see them flatten it out," said Giusippe.
When all are sewn, remove the papers and flatten the seams with an iron.
Raise tacks and sheets, round with the main-yard, and flatten in forward.
There is nothing in the walk itself to flatten down the occasion.
A noise at the back of the house made them start and flatten against the wall.
Flatten in, fore and aft, and stand by to let run your halyards!