From the worlds most reliable source;
.... such as cheese on toast, in which the bread is toasted on one side, turned and topped with cheese before grilling the second side.
I thank you and good night.
ahem... I think you were looking for this page....
http://en.wikipedia.org/wiki/Cheese_on_toast"Cheese on toast consists of toast, either buttered or not, with a plain toasted side and grilled cheese on the other"
I'll call you a cab.....