CTRL: Short for “Control”

Control: The Oxford English Dictionary states, “1.1 The ability to manage a machine, vehicle, or other moving object.”

CTRL: When an athlete controls a machine in order to compete. We call that a CTRL Sport.

What do you mean by “Machine” ? Well machines can be very simple

Simple Machines: Wikipedia states, “A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Usually the term refers to the six classical simple machines which were defined by Renaissance scientists:

A Skateboard is a Simple Machine… If you like you can check out this activity about that on Wonders of Our World