A person who directs the performance of an orchestra or choir
Military. Originally: an assistant to a conductor. Later also: an officer ranking below a conductor. Now historical.
A person whose job is to collect fares and sell tickets on a bus
A substance that does not conduct heat or electricity
A musician who conducts a band or orchestra while playing the piano; frequently attributive, designating a score used by such a conductor.
(In offshore drilling) a pipe of large diameter extending from underneath the rotary table to the seabed, providing a casing for the drill in its passage through water and a means of returning and recirculating drilling fluid.
A rail transmitting current to an electric train or other vehicle
Designating an electrical instrument or apparatus in which a conductor is situated in a magnetic field, so that either the conductor moves when a current flows through it or else movement of the conductor generates a current.
A conductor by which a current returns to its source.
A metal rod or wire fixed to an exposed part of a building or other tall structure to divert lightning harmlessly into the ground