Noun
1. 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
2. a vast multitude
3. an animal or plant that nourishes and supports a parasite; the host does not benefit and is often harmed by the association
4. a person who acts as host at formal occasions (makes an introductory speech and introduces other speakers)
5. archaic terms for army
6. any organization that provides resources and facilities for a function or event;
"Atlanta was chosen to be host for the Olympic Games"7. (medicine) recipient of transplanted tissue or organ from a donor
8. the owner or manager of an inn
9. (computer science) a computer that provides client stations with access to files and printers as shared resources to a computer network