In biology, an organism that is parasitized by another. In commensalism, the partner that does not benefit may also be called the host.
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. Any organization that provides resources and facilities for a function or event.
3. Archaic term for army; SYN. legion.
4. The owner or manager of an inn; SYN. innkeeper.
The primary or controlling computer in a multiple part system.