D defs.my
Entry 7 senses Webster, 1913

Driver

/drīʹvər/ · Driv·er · IPA /ˈdɹaɪvɚ/
01 n. One who, or that which, drives; the person or thing that urges or compels anything else to move onward.
  1. 1.
    One who, or that which, drives; the person or thing that urges or compels anything else to move onward.
  2. 2.
    The person who drives beasts or a carriage; a coachman; a charioteer, etc.; hence, also, one who controls the movements of a any vehicle.
  3. 3.
    An overseer of a gang of slaves or gang of convicts at their work.
  4. 4.
    A part that transmits motion to another part by contact with it, or through an intermediate relatively movable part, as a gear which drives another, or a lever which moves another through a link, etc. Specifically:(Mach.)
  5. 5.
    The driving wheel of a locomotive.
  6. 6.
    The after sail in a ship or bark, being a fore-and-aft sail attached to a gaff; a spanker.(Naut.)
  7. 7.
    An implement used for driving;
Phrases & compounds
Driver ant — a species of African stinging ant; one of the visiting ants (Anomma arcens); -- so called because they move about in vast armies, and drive away or devour all insects and other small animals.