Something on which other things depend for support.
A retail price that is double the cost price; a markup of 100%.
A native or resident of the American state of Pennsylvania.
The combination of the shortstop and second baseman.
The top stone of an arch.
To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
To double the cost price in order to determine the retail price; to apply a markup of 100%.
A central cohesive source of stability and security; a person or thing that is critical to a system or organisation.
A pin inserted through holes at the end of an axle or shaft, so as to secure a wheel or shaft-mounted device.
To adopt as, or serve as, a central cohesive source of stability and security.