keystone
Pronunciation:
/ˈkiː.stəʊn/noun
Definitions
The top stone of an arch.
Something on which other things depend for support.
A native or resident of the American state of Pennsylvania.
(retail) A retail price that is double the cost price; a markup of 100%.
verb
Definitions
To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
(retail) To double the cost price in order to determine the retail price; to apply a markup of 100%.