Host (n.) The consecrated wafer, believed to be the body of Christ, which in the Mass is offered as a sacrifice; also, the bread before consecration.

Host (n.) An army; a number of men gathered for war.

Host (n.) Any great number or multitude; a throng.

Host (n.) One who receives or entertains another, whether gratuitously or for compensation; one from whom another receives food, lodging, or entertainment; a landlord.

Host (v. t.) To give entertainment to.

Host (v. i.) To lodge at an inn; to take up entertainment.