Definitions:
a person who receives or entertains other people as guests

an animal or plant on or in which a parasite or commensal organism lives.

a person or animal that has received transplanted tissue or a transplanted organ.

a computer which stores a website or other data that can be accessed over the internet or which provides other services to a network.

act as host at (an event) or for (a television or radio programme)

store (a website or other data) on a server or other computer so that it can be accessed over the internet

a large number of people or things

an army.

(in biblical use) the angels regarded collectively.

a flock of sparrows

the bread consecrated in the eucharist