One who conducts or leads; a guide; a director. / (music) A person who conducts an orchestra, choir or other music ensemble; a professional whose occupation is conducting.

plural of conductor

A metallic conductor that is attached to a high point of a building and leads to the ground and protects the building from damage by lightning.

plural of lightning conductor

synonym of live rail / synonym of third rail

plural of conductor rail

A person on a bus who collects fares and issues tickets

plural of bus conductor

Lacking a conductor

Characteristic of a conductor (especially one who directs an orchestra)