conductor

definition: a device designed to transmit electricity, heat, etc.
example:
speech part: noun
synonyms:
definition: the person who leads a musical group
example:
speech part: noun
synonyms: music director director
definition: the person who collects fares on a public conveyance
example:
speech part: noun
synonyms:
definition: a substance that readily conducts e.g. electricity and heat
example:
speech part: noun
synonyms:

conductor is explained and pronounced

How conductor is being used?