conductor Meaning, Definition & Usage

  1. noun the person who leads a musical group
    director; music director.
  2. noun a substance that readily conducts e.g. electricity and heat
  3. noun the person who collects fares on a public conveyance
  4. noun a device designed to transmit electricity, heat, etc.

WordNet

Con*duct"or noun
Etymology
LL., a carrier, transporter, L., a lessee.
Definitions
  1. One who, or that which, conducts; a leader; a commander; a guide; a manager; a director.
    Zeal, the blind conductor of the will. Dryden.
  2. One in charge of a public conveyance, as of a railroad train or a street car. U. S.
  3. (Mus.) The leader or director of an orchestra or chorus.
  4. (Physics) A substance or body capable of being a medium for the transmission of certain forces, esp. heat or electricity; specifically, a lightning rod.
  5. (Surg.) A grooved sound or staff used for directing instruments, as lithontriptic forceps, etc.; a director.
  6. (Arch.) Same as Leader.

Webster 1913