The Collaborative International Dictionary of English v.0.48:

Host \Host\ (h[=o]st), n. [LL. hostia sacrifice, victim, from
   hostire to strike.] (R. C. Ch.)
   The consecrated wafer, believed to be the body of Christ,
   which in the Mass is offered as a sacrifice; also, the bread
   before consecration.
   [1913 Webster]

   Note: In the Latin Vulgate the word was applied to the Savior
         as being an offering for the sins of men.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Host \Host\, v. t.
   To give entertainment to. [Obs.] --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Host \Host\ (h[=o]st), n. [OE. host, ost, OF. host, ost, fr. L.
   hostis enemy, LL., army. See Guest, and cf. Host a
   landlord.]
   1. An army; a number of men gathered for war.
      [1913 Webster]

            A host so great as covered all the field. --Dryden.
      [1913 Webster]

   2. Any great number or multitude; a throng.
      [1913 Webster]

            And suddenly there was with the angel a multitude of
            the heavenly host praising God.       --Luke ii. 13.
      [1913 Webster]

            All at once I saw a crowd,
            A host, of golden daffodils.          --Wordsworth.
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The Collaborative International Dictionary of English v.0.48:

Host \Host\, v. i.
   To lodge at an inn; to take up entertainment. [Obs.] "Where
   you shall host." --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Host \Host\ (h[=o]st), n. [OE. host, ost, OF. hoste, oste, F.
   h[^o]te, from L. hospes a stranger who is treated as a guest,
   he who treats another as his guest, a hostl prob. fr. hostis
   stranger, enemy (akin to E. guest a visitor) + potis able;
   akin to Skr. pati master, lord. See Host an army,
   Possible, and cf. Hospitable, Hotel.]
   1. One who receives or entertains another, whether
      gratuitously or for compensation; one from whom another
      receives food, lodging, or entertainment; a landlord.
      --Chaucer. "Fair host and Earl." --Tennyson.
      [1913 Webster]

            Time is like a fashionable host,
            That slightly shakes his parting guest by the hand.
                                                  --Shak.
      [1913 Webster]

   2. (Biol.) Any animal or plant affording lodgment or
      subsistence to a parasitic or commensal organism. Thus a
      tree is a host of an air plant growing upon it.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

host
    n 1: 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
    2: a vast multitude [syn: horde, host, legion]
    3: an animal or plant that nourishes and supports a parasite; it
       does not benefit and is often harmed by the association [ant:
       parasite]
    4: a person who acts as host at formal occasions (makes an
       introductory speech and introduces other speakers) [syn:
       master of ceremonies, emcee, host]
    5: archaic terms for army [syn: host, legion]
    6: any organization that provides resources and facilities for a
       function or event; "Atlanta was chosen to be host for the
       Olympic Games"
    7: (medicine) recipient of transplanted tissue or organ from a
       donor
    8: the owner or manager of an inn [syn: host, innkeeper,
       boniface]
    9: a technical name for the bread used in the service of Mass or
       Holy Communion
    10: (computer science) a computer that provides client stations
        with access to files and printers as shared resources to a
        computer network [syn: server, host]
    v 1: be the host of or for; "We hosted 4 couples last night"

Moby Thesaurus II by Grady Ward, 1.0:

74 Moby Thesaurus words for "Host":
   Agnus Dei, Communion, Eucharist, Holy Communion, Holy Grail,
   Last Supper, Pieta, Sacrament Sunday, Sanctus bell, Sangraal,
   altar bread, ark, asperger, asperges, aspergillum, bambino,
   beadroll, beads, bread, bread and wine, candle, censer, chaplet,
   ciborium, consecrated bread, consecrated elements,
   consubstantiation, cross, crucifix, cruet, elements, eucharistial,
   holy cross, holy water, holy-water sprinkler, icon, impanation,
   incensory, intinction, loaf, matzo, menorah, mezuzah, mikvah,
   monstrance, osculatory, ostensorium, paschal candle, pax,
   phylacteries, prayer shawl, prayer wheel, pyx, real presence,
   relics, rood, rosary, sacramental, sacred relics, sacring bell,
   shofar, subpanation, sukkah, tabernacle, tallith,
   the Holy Sacrament, the Sacrament, thurible, transubstantiation,
   urceole, veronica, vigil light, votive candle, wafer



Moby Thesaurus II by Grady Ward, 1.0:

116 Moby Thesaurus words for "host":
   MC, a mass of, a world of, announcer, armed force, armed service,
   army, array, assemblage, assembly, bevy, body, bunch,
   career soldiers, cloud, cluster, clutter, cohue, colony, covey,
   crowd, crush, deluge, do the honors, drift, drive, drove, emcee,
   entertain, entertain guests, entertainer, fighting machine, flight,
   flock, flocks, flood, forces, galaxy, gam, gang, give a party,
   ground forces, ground troops, guest, hail, have, heap, herd, hive,
   horde, hostess, innkeeper, jam, kennel, landlady, landlord,
   large amount, legion, legions, litter, lots, manager, many, mass,
   masses of, master of ceremonies, military establishment, mine host,
   mob, muchness, multitude, nest, numbers, occupation force, pack,
   panoply, paratroops, plurality, pod, presenter, preside, press,
   pride, proprietor, proprietress, publican, quantities, quite a few,
   rabble, rank and file, ranks, receptionist, regular army, regulars,
   rout, ruck, school, scores, shoal, ski troops, skulk, sloth,
   soldiery, spate, standing army, storm troops, swarm, the line,
   the military, throng, throw a party, tidy sum, trip, troop, troops,
   worlds of



The Free On-line Dictionary of Computing (30 December 2018):

host

   1.  A computer connected to a network.

   The term node includes devices such as routers and printers
   which would not normally be called "hosts".

   2.  A computer to which one connects using a
   terminal emulator.

   (1995-02-16)


Easton's 1897 Bible Dictionary:

Host
   an entertainer (Rom. 16:23); a tavern-keeper, the keeper of a
   caravansary (Luke 10:35).

     In warfare, a troop or military force. This consisted at first
   only of infantry. Solomon afterwards added cavalry (1 Kings
   4:26; 10:26). Every male Israelite from twenty to fifty years of
   age was bound by the law to bear arms when necessary (Num. 1:3;
   26:2; 2 Chr. 25:5).

     Saul was the first to form a standing army (1 Sam. 13:2;
   24:2). This example was followed by David (1 Chr. 27:1), and
   Solomon (1 Kings 4:26), and by the kings of Israel and Judah (2
   Chr. 17:14; 26:11; 2 Kings 11:4, etc.).