The side window glasses were specially shaped with a flat top edge to fit the new roof line.
The tail ends with a flat edge and may be slightly forked in the middle.
He starts picking up pieces with a flat edge.
Where the face once was, there was nothing but a broken flat edge.
She tried switching it on, but its flat edges remained dull.
She held up a warning hand the flat edge in an offensive position.
There was no key, but all she needed was a flat edge.
At the top of the "C" is usually a small flat edge.
Generally some other object or objects will be contained between the top and bottom flat edges.