Definitions
1.nounA device that controls or limits something."The voltage regulator stopped working and the resulting overload destroyed the device."
2.nounA person or group that sets standards of practice, especially those established by law.
3.nounA very accurate clock, used by clockmakers to measure the timekeeping of each newly made clock.
4.nounA gene involved in controlling the expression of one or more other genes.
5.nounA device that controls the supply of steam to the cylinders of a steam locomotive.
6.nounA bulldozer (member of intimidating group of white US Southerners).