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
turn (something) on its ear
to change some activity in a surprising and exciting way
The new manager turned the office on its ear when he began to work in our department.