host Meaning in Cambridge American English Dictionary
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Meaning of "host" - American English Dictionary

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hostnoun

 us   /hoʊst/

host noun (PARTY ORGANIZER)

[C] (female hostess,  /ˈhoʊ·stəs/ ) someone who gives a party or has guests: Lucy was a gracious host. Vancouver played host to the conference (= the event happened there).

host noun (BROADCASTER)

[C] (female hostess,  /ˈhoʊ·stəs/ ) a person who introduces guests and performers on television or radio: a talk-show host

host noun (PLANT/ANIMAL)

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

host noun (LARGE NUMBER)

[C usually sing] a large number: They cared for wounded soldiers and performed a host of other duties.

hostverb [T]

 us   /hoʊst/
to be the host for guests or for a special event: Which country is hosting the next Olympics?
(Definition of host from the Cambridge Academic Content Dictionary © Cambridge University Press)
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