n.
1.the person who leads a musical group
2.a device designed to transmit electricity, heat, etc.
3.a substance that readily conducts e.g. electricity and heat
4.the person who collects fares on a public conveyance
Idiom of the Day
put on a brave face
to try to appear happy when faced with a bad situation
My friend put on a brave face even though he had lost his job.