'emcee' definitions:

Definition of 'emcee'

(from WordNet)
noun
A person who acts as host at formal occasions (makes an introductory speech and introduces other speakers) [syn: master of ceremonies, emcee, host]
verb
Act as a master of ceremonies [syn: emcee, compere]

Synonyms of 'emcee'

From: Moby Thesaurus