проводни́к

fairly common #3313C2

nounmasculineanimatecountable

1.
train conductor, guard (on a train), train attendantrailways
Проводни́к прове́рил на́ши биле́ты.
The conductor checked our tickets.
The person in charge of a railway carriage in Russia; also checks tickets.
2.
guide
В гора́х мы на́няли о́пытного проводника́.
In the mountains we hired an experienced guide.
3.
conductor (of electricity)physics
Медь — хоро́ший проводни́к электри́чества.
Copper is a good conductor of electricity.
4.
bearer (of ideas), champion (of ideas), vehicle
Газе́та была́ проводнико́м новых иде́й.
The newspaper was a vehicle for new ideas.
Figurative use, mostly in written style.

Examples

Проводник, отцепивший вагон, доложил начальнику станции.
The conductor who had uncoupled the carriage reported to the stationmaster.
Мы искали проводника, легко ориентирующегося на местности.
We were looking for a guide who could easily find his way around the area.
Отряду был придан опытный проводник.
An experienced guide was assigned to the group.
Проводник, пересаживающий пассажиров, помог найти новые места.
The conductor who was reseating the passengers helped them find their new seats.
Проводник взводил туристов на самую вершину.
The guide led the tourists up to the very summit.
Развьючивающий мулов проводник работал очень быстро.
The guide unloading the mules worked very quickly.
Проводник, подсадивший старушку в вагон, улыбнулся ей.
The conductor, who helped the old woman board the train, smiled at her.
Летом мы поднимались на Казбек с проводником.
In summer, we climbed Kazbek with a guide.

⚠️ Stress change.