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
reach first base with (someone or something)
to make a major advance with someone or something
The salesperson was unable to reach first base with the buyer.