Meaning of host
Definition of host
(noun)
a person who invites guests to a social event (such as a party in his or her own home) and who is responsible for them while they are there
an animal or plant that nourishes and supports a parasite; it does not benefit and is often harmed by the association
a person who acts as host at formal occasions (makes an introductory speech and introduces other speakers)
any organization that provides resources and facilities for a function or event; "Atlanta was chosen to be host for the Olympic Games"