They are named for their flat surface, like a table top.

The game board is opened and placed on a flat surface.

They had to be put on a very flat surface.

The back of her head fell against its flat surface.

Give me a flat surface, and I can run for hours.

We've had a very flat surface to try to get a reaction out of you.

Its feet met the flat surface he was already standing on and brought it closer.

The flat surface on the other side, where they had made love, was dry now.

Take out of the pan and place on a flat surface.

She opened her mouth to show him the flat surface.