driverdriv·er /ˈdraɪvə-ər/ noun [countableC]1a person who drives a car, bus, train etc
2something that has an important influence on other thingsPopulation growth is the biggest single driver of atmospheric pollution.
3COMPUTING a program that controls the operation of a piece of equipmentThe program automatically chooses the correct driver for whatever option you’re configuring.
a 32 bit ScSC driver, featuring a Solaris operating system