keystone

About 0.99 uses per million words.

Meaning

1. noun The top stone of an arch.
2. noun Something on which other things depend for support.
3. noun A retail price that is double the cost price; a markup of 100%.
4. noun The combination of the shortstop and second baseman.
5. verb To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
6. verb To double the cost price in order to determine the retail price; to apply a markup of 100%.

Similar words

headstone vault pillar cornerstone basement centrepiece key fulcrum pivot linchpin

Often followed by

of state in species to view kops cops and

Word family

keystone species keystones