1
- a person who receives or entertains other people as guests（招待客人的）主人。
1.1
- a person, place, or organization that holds and organizes an event to which others are invited主办者, 主办地, 主办方：
Innsbruck once played host to the Winter Olympics.
因斯布鲁克曾经主办过冬季奥运会。
1.2
- the presenter of a television or radio programme（电视或广播节目的）主持人。
2
- Biology an animal or plant on or in which a parasite or commensal organism lives【生】寄主, 宿主。
2.1
- （亦作host cell）a living cell in which a virus multiplies病毒繁殖的活细胞。
3
- an animal or person that has received transplanted tissue or a transplanted organ接受移植组织（或器官）的受体。
4
- （亦作host computer）a computer which mediates multiple access to databases mounted on it or provides other services to a computer network主机。
5
- an area in which particular living things are found（某种特别生物的）生存地：
Australia is host to some of the world's most dangerous animals.
澳大利亚是世界上一些最危险的动物之家。
with obj.
1
- act as host at (an event) or for (a television or radio programme)主办（活动）; 主持（电视或广播节目）。
2
- store (a website or other electronic data) on a computer connected to the Internet把（网站或其他电子数据）存储在联网计算机：
Columbia University currently hosts some 400 websites.
哥伦比亚大学目前在自己的联网计算机里存储着大约400个网站。
短语
mine host
- humorous the landlord or landlady of a pub〈幽默〉酒馆老板; 酒馆老板娘。
词源
Middle English: from Old French hoste, from Latin hospes, hospit-'host, guest'.
noun
1a host/hosts of
- a large number of people or things许多人（或物）：
a host of memories rushed into her mind.
许多记忆涌入她的脑海。
1.1
- archaic an army〈古〉军队。
1.2
- poetic/literary (in biblical use) the sun, moon, and stars〈诗/文〉（用于圣经）日月星辰：
the starry host of heaven.
天空中闪闪发光的日月星辰。
1.3
- another term for HEAVENLY HOST同HEAVENLY HOST. 参见LORD条Lord of hosts.
词源
Middle English: from Old French ost, hoost, from Latin hostis 'stranger, enemy' （in medieval Latin 'army'）.