driver

/ˈdraɪvər/ noun [C]

Definition

› TRANSPORT someone who drives a vehicle: You may get nothing in an accident if the other driver is uninsured. a bus/lorry/truck driver

› IT a computer program that makes it possible for a computer to use other pieces of equipment such as a printer: a printer driver

› something that makes other things progress, develop, or grow stronger: Momentum-based investing is the most prominent of the new market drivers.an important/a key/a major driver of sth Service sector output is up 1.2% in the latest quarter making it, by far, the major driver of growth once more.

be in the driver's seat US › be in the driving seat

(Definition of driver noun from the Cambridge Business English Dictionary © Cambridge University Press)

Focus on the pronunciation of driver