The Collaborative International Dictionary of English v.0.48:

global \glob"al\ adj.
   1. involving the entire earth; not limited or provincial in
      scope; as, global war; global monetary policy.

   Syn: planetary, worldwide.
        [WordNet 1.5]

   2. shaped like a globe; spherical.

   Syn: ball-shaped, globose, globular, orbicular, spheric,
        spherical.
        [WordNet 1.5]

   3. broad in scope or content; comprehensive. Opposite of
      noncomprehensive.

   Syn: all-embracing, all-inclusive, across-the-board,
        blanket(prenominal), broad, complete, panoptic, wide.
        [WordNet 1.5]

   4. (Computers) Accessible and effective throughout an entire
      computer program, rather than in only one subroutine; --
      used of variables; as, global variable. Opposite of
      local.
      [PJC]

WordNet (r) 3.0 (2006):

global
    adj 1: involving the entire earth; not limited or provincial in
           scope; "global war"; "global monetary policy"; "neither
           national nor continental but planetary"; "a world
           crisis"; "of worldwide significance" [syn: global,
           planetary, world(a), worldwide, world-wide]
    2: having the shape of a sphere or ball; "a spherical object";
       "nearly orbicular in shape"; "little globular houses like
       mud-wasp nests"- Zane Grey [syn: ball-shaped, global,
       globose, globular, orbicular, spheric, spherical]

Moby Thesaurus II by Grady Ward, 1.0:

133 Moby Thesaurus words for "global":
   absolute, across-the-board, admitting no exception,
   all-comprehending, all-comprehensive, all-covering, all-embracing,
   all-encompassing, all-filling, all-including, all-inclusive,
   all-out, all-pervading, allover, blanket, broad, bulblike, bulbous,
   categorical, catholic, clear, compendious, complete, comprehensive,
   conclusive, cosmic, cosmopolitan, country-wide, decided, decisive,
   definite, definitive, determinate, developed, downright, ecumenic,
   ecumenical, ellipsoid, encyclopedic, entire, epidemic, explicit,
   express, extensive, far-reaching, final, fixed, flat, flat-out,
   full, full-fledged, full-grown, full-scale, galactic, globate,
   globe-shaped, globed, globelike, globoid, globose, globular,
   heaven-wide, hemispheric, implicit, inappealable, indisputable,
   intact, international, mature, matured, national,
   nondenominational, nonsectarian, obovoid, omnibus, orb, orbed,
   orbic, orbicular, orbiculate, orblike, orby, out-and-out, outright,
   over-all, ovoid, pandemic, panoramic, peremptory, perfect,
   planetary, positive, ripe, round, solid, sphere-shaped, spherelike,
   spheric, spheriform, spheroid, straight, straight-out, sweeping,
   synoptic, total, unabbreviated, uncircumscribed, unconditional,
   unconditioned, uncut, undiminished, undoubting, unequivocal,
   unexpurgated, unhampered, unhesitating, universal, unlimited,
   unmistakable, unmitigated, unqualified, unquestioning, unreserved,
   unrestricted, unwaivable, utter, whole, wide-ranging,
   without exception, without omission, without reserve, world-wide,
   worldwide