Meaning of CONDUCTOR in English

CONDUCTOR

/ kənˈdʌktə(r); NAmE / noun

1.

a person who stands in front of an orchestra , a group of singers etc., and directs their performance, especially sb who does this as a profession

2.

( BrE also guard ) a person who is in charge of a train and travels with it, but does not drive it

3.

( BrE ) a person whose job is to collect money from passengers on a bus or check their tickets :

a bus conductor

4.

( physics ) a substance that allows electricity or heat to pass along it or through it :

Wood is a poor conductor.

—see also lightning conductor

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WORD ORIGIN

late Middle English (denoting a military leader): via Old French from Latin conductor , from conducere bring together.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.