HOST. (I) One who provides another with lodging and enter tainment (Lat. hospes, a guest or host). In biology, an animal or plant upon which a parasite lives. (2) An army, and generally any multitude (Lat. hostis, a stranger or enemy). In biblical use the word is applied to the company of angels in heaven ; or to the sun, moon and stars. (3) The sacrifice of Christ's body and blood in the eucharist, the consecrated wafer used in the service of the mass in the Roman Church (from Lat. hostia, a victim or sacri fice). (See EUCHARIST.)