The Collaborative International Dictionary of English v.0.48:
Toastmaster \Toast"mas`ter\, n. A person who presides at a public dinner or banquet, and announces the toasts. [1913 Webster]WordNet (r) 3.0 (2006):
toastmaster n 1: the person who proposes toasts and introduces speakers at a banquet [syn: toastmaster, symposiarch]