definition of
[host]

[1] #1 host n. a person who invites guests to a social event (such as a party in his or her own home) and who is responsible for them while they are there. wn

[2] #2 host n. [horde, legion] a vast multitude. wn

[3] #3 host n. an animal or plant that nourishes and supports a parasite; it does not benefit and is often harmed by the association. wn

[4] #4 host n. [master of ceremonies, emcee] a person who acts as host at formal occasions (makes an introductory speech and introduces other speakers). wn

[5] #5 host n. [legion] archaic terms for army. wn