The Collaborative International Dictionary of English v.0.48:

Home \Home\, a.
   1. Of or pertaining to one's dwelling or country; domestic;
      not foreign; as home manufactures; home comforts.
      [1913 Webster]

   2. Close; personal; pointed; as, a home thrust.
      [1913 Webster]

   3. (Games) In various games, the ultimate point aimed at in a
      progress; goal; as:
      (a) (Baseball) The plate at which the batter stands; same
          as home base and home plate.
      (b) (Lacrosse) The place of a player in front of an
          opponent's goal; also, the player.
          [Webster 1913 Suppl.]

   Home base or Home plate (Baseball), the base at which the
      batter stands when batting, and which is the last base to
      be reached in scoring a run.

   Home farm, grounds, etc., the farm, grounds, etc.,
      adjacent to the residence of the owner.

   Home lot, an inclosed plot on which the owner's home
      stands. [U. S.]

   Home rule, rule or government of an appendent or dependent
      country, as to all local and internal legislation, by
      means of a governing power vested in the people within the
      country itself, in contradistinction to a government
      established by the dominant country; as, home rule in
      Ireland. Also used adjectively; as, home-rule members of
      Parliament.

   Home ruler, one who favors or advocates home rule.

   Home stretch (Sport.), that part of a race course between
      the last curve and the winning post.

   Home thrust, a well directed or effective thrust; one that
      wounds in a vital part; hence, in controversy, a personal
      attack.
      [1913 Webster]

WordNet (r) 3.0 (2006):

grounds
    n 1: your basis for belief or disbelief; knowledge on which to
         base belief; "the evidence that smoking causes lung cancer
         is very compelling" [syn: evidence, grounds]
    2: the enclosed land around a house or other building; "it was a
       small house with almost no yard" [syn: yard, grounds,
       curtilage]
    3: a tract of land cleared for some special purposes (recreation
       or burial etc.)
    4: a justification for something existing or happening; "he had
       no cause to complain"; "they had good reason to rejoice"
       [syn: cause, reason, grounds]
    5: dregs consisting of solid particles (especially of coffee)
       that form a residue; "it is a Middle Eastern custom to read
       your future in your coffee grounds"

Moby Thesaurus II by Grady Ward, 1.0:

180 Moby Thesaurus words for "grounds":
   Astroturf, acres, alluvion, alluvium, antecedents, artificial turf,
   ash, base, basement, basis, basis for belief, bearing wall, bed,
   bedding, bedrock, body of evidence, boundary condition,
   bowling green, call, catch, causation, cause, cause and effect,
   chain of evidence, chattels real, cinder, clause, clinker, clue,
   common, condition, data, datum, demesne, deposition, deposits,
   determinant, determinative, diluvium, documentation, domain,
   donnee, draff, dregs, dross, element, ember, escalator clause,
   escape clause, escape hatch, etiology, evidence, exhibit, fact,
   factor, facts, fairway, feces, fine print, floor, flooring, fond,
   footing, foundation, froth, fundament, fundamental, given,
   golf course, golf links, good reason, grassplot, green, greenyard,
   ground, grounds for belief, groundwork, hardpan, honor, indication,
   item of evidence, joker, kicker, land, landed property, lands,
   lawn, lees, limiting condition, loess, lot, lots, manifestation,
   manor, mark, material basis, material grounds, messuage, moraine,
   muniments, mute witness, obligation, occasion, offscum, parameter,
   parcel, park, pavement, piece of evidence, plat, plot, praedium,
   precipitate, precipitation, premises, prerequisite, principle,
   proof, property, provision, provisions, proviso, putting green,
   quadrat, radical, real estate, real property, realty, reason,
   reason to believe, relevant fact, requisite, right, riprap,
   rock bottom, rudiment, saving clause, scoria, scum, seat, sediment,
   settlings, sign, sill, silt, sine qua non, sinter, slag,
   small print, smut, solid ground, solid rock, soot, specification,
   stereobate, stimulus, stipulation, string, stylobate, sublimate,
   substance, substratum, substruction, substructure, symptom,
   tenements, terms, terra firma, toft, token, ultimatum,
   underbuilding, undercarriage, undergirding, underpinning,
   understruction, understructure, village green, warrant, whereas