Definitions
1.nounOne who conducts or leads; a guide; a director.
2.nounA person who conducts an orchestra, choir or other music ensemble; a professional whose occupation is conducting.
3.nounA person who takes tickets on public transportation and also helps passengers"train conductor; tram conductor"
4.nounSomething that can transmit electricity, heat, light or sound.
5.nounAn ideal of a ring that measures how far it is from being integrally closed
6.nounA grooved sound or staff used for directing instruments, such as lithontriptic forceps; a director.
7.nounA leader.