conductor
US /kənˈdʌk.tɚ/
UK /kənˈdʌk.tɚ/

1.
a person who directs the performance of an orchestra or choir
:
•
The conductor raised his baton, and the orchestra began to play.
•
She dreams of becoming a famous orchestra conductor.
2.
a material or device that conducts heat, electricity, or sound
:
•
Copper is an excellent conductor of electricity.
•
Glass is a poor conductor of heat.
3.
a person who collects fares on a public conveyance
:
•
The bus conductor announced the next stop.
•
He worked as a tram conductor for many years.