host

1 host /ˈhoʊst/ noun
plural hosts
1 host
/ˈhoʊst/
noun
plural hosts
Britannica Dictionary definition of HOST
[count]
1 
: a person (especially a man) who is entertaining guests socially or as a job — compare hostess
2 
: a person who talks to guests on a television or radio show
3 
: an animal or plant in which another animal or plant lives and gets its food or protection
— compare parasite 1

play host to

◊ A place or organization that plays host to an event (such as a meeting or convention) provides the things that are needed for that event.
2 host /ˈhoʊst/ verb
hosts; hosted; hosting
2 host
/ˈhoʊst/
verb
hosts; hosted; hosting
Britannica Dictionary definition of HOST
[+ object]
: to be the host for (a social event, a group of people, etc.)
3 host /ˈhoʊst/ noun
plural hosts
3 host
/ˈhoʊst/
noun
plural hosts
Britannica Dictionary definition of HOST
[count]
: a great amount or number