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English definition of “host”

host

noun uk   /həʊst/ us    /hoʊst/

host noun (PERSON WITH GUESTS)

B2 [C] (female also hostess) someone who has guests: We thanked our hosts for a very enjoyable evening. The local language school is advertising for host families (= families people stay with when they are visiting another country).

host noun (ON TELEVISION)

C2 [C] (female also hostess) a person who introduces guests and performers, especially on television or radio: Our host for tonight's show is Graham Norton.

host noun (FOR AN EVENT)

[C] a place or organization that provides the space and other necessary things for a special event: Japan is playing host to the next international conference. the host nation for the next World Cup

host noun (ANIMAL/PLANT)

[C] specialized biology a plant or animal that another plant or animal lives on as a parasite

host noun (A LOT)

a host of C1 a large number of something: There's a whole host of reasons why he didn't get the job.

host noun (CHURCH)

the host [S] specialized the holy bread that is eaten at Communion (= a Christian religious ceremony)

host noun (INTERNET)

[C] a company that hosts a website on the internet

host

verb [T] uk   /həʊst/ us    /hoʊst/

host verb [T] (EVENT)

C1 to provide the space and other things necessary for a special event: Which country is hosting the next Olympic Games?

host verb [T] (TELEVISION SHOW)

to be the host of a television or radio programme: to host a show/programme

host verb [T] (INTERNET)

to provide the computer hardware and software that allows a website to exist on the internet: I've written my website, now I just need to find a company to host it.
(Definition of host from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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