host1

noun

• 1a person who receives or entertains other people as guests:a dinner-party host
• a person, place, or organization that holds and organizes an event to which others are invited:Innsbruck once played host to the Winter Olympics
• an area in which particular living things are found:Australia is host to some of the world’s most dangerous animals
• often humorous the landlord or landlady of a pub:mine host raised his glass of whiskey
• the moderator or emcee of a television or radio program.

• 2 Biology an animal or plant on or in which a parasite or commensal organism lives.
• (also host cell) a living cell in which a virus multiplies.
• a person or animal that has received transplanted tissue or a transplanted organ.

• 3 (also host computer) a computer that mediates multiple access to databases mounted on it or provides other services to a computer network.

verb

• 1act as host at (an event) or for (a television or radio program).

• 2store (a website or other data) on a server or other computer so that it can be accessed over the Internet:Columbia University currently hosts some 400 websites