Toastmaster
/ˈtəʊstmæstər/
Definition 1 of 2
Pro Tip 1/3Event Role
A toastmaster is responsible for managing public speaking events and keeping the program on schedule. 
As toastmaster, he confidently introduced each speaker and announced the breaks.
Pro Tip 2/3Public Speaker
While a toastmaster introduces others, they may also make their own speeches during the event. 
The toastmaster opened the ceremony with a brief speech welcoming all attendees.
Pro Tip 3/3Cultural Context
The role of a toastmaster can vary by culture, such as leading toasts at formal dinners in some societies. 
In the UK, the toastmaster led the traditional toasts during the banquet.