The Collaborative International Dictionary of English v.0.48:

Eminent \Em"i*nent\, a. [L. eminens, -entis, p. pr. of eminere
   to stand out, be prominent; e out + minere (in comp.) to
   project; of uncertain origin: cf. F. ['e]minent. Cf.
   Menace.]
   1. High; lofty; towering; prominent. "A very eminent
      promontory." --Evelyn
      [1913 Webster]

   2. Being, metaphorically, above others, whether by birth,
      high station, merit, or virtue; high in public estimation;
      distinguished; conspicuous; as, an eminent station; an
      eminent historian, statements, statesman, or saint.
      [1913 Webster]

   Right of eminent domain. (Law) See under Domain.

   Syn: Lofty; elevated; exalted; conspicuous; prominent;
        remarkable; distinguished; illustrious; famous;
        celebrated; renowned; well-known. See Distinguished.
        [1913 Webster]

WordNet (r) 3.0 (2006):

eminent
    adj 1: standing above others in quality or position; "people in
           high places"; "the high priest"; "eminent members of the
           community" [syn: eminent, high]
    2: of imposing height; especially standing out above others; "an
       eminent peak"; "lofty mountains"; "the soaring spires of the
       cathedral"; "towering icebergs" [syn: eminent, lofty,
       soaring, towering]

Moby Thesaurus II by Grady Ward, 1.0:

182 Moby Thesaurus words for "eminent":
   Olympian, a cut above, above, absolute, aerial, aggrandized, ahead,
   airy, altitudinous, apotheosized, ascendant, ascending, aspiring,
   august, authoritarian, authoritative, authorized, autocratic,
   awesome, beatified, better, big, bold, canonized, capping,
   celebrated, chosen, clothed with authority, colossal, commanding,
   competent, consequential, considerable, conspicuous, controlling,
   deified, dignified, distinguished, dominant, dominating,
   duly constituted, eclipsing, elevated, emissile, empowered,
   ennobled, enshrined, enthroned, esteemed, estimable, ethereal,
   ex officio, exalted, exceeding, excellent, excelling, exceptional,
   excrescent, excrescential, extraordinary, extruding, famous, finer,
   glorified, glorious, godlike, governing, grand, great, greater,
   haughty, hegemonic, hegemonistic, held in awe, heroic, high,
   high and mighty, high-pitched, high-reaching, high-set, high-up,
   higher, honored, illustrious, immortal, immortalized, imperative,
   important, in ascendancy, in the ascendant, influential, jutting,
   lauded, leading, lofty, magnanimous, magnificent, magnified,
   majestic, major, marked, memorable, mighty, momentous, monocratic,
   monumental, mounting, noble, notable, noted, noteworthy, of choice,
   of mark, official, one up on, outstanding, outtopping, over,
   overlooking, overtopping, potent, powerful, preeminent,
   prestigious, prognathous, projecting, prominent, protrudent,
   protruding, protrusile, protrusive, protuberant, protuberating,
   puissant, ranking, rare, remarkable, rememberable, renowned,
   reputable, respected, revered, rivaling, ruling, sainted, salient,
   sanctified, senior, shrined, signal, soaring, special, spiring,
   steep, striking, sublime, substantial, super, superb, supereminent,
   superior, superlative, supernal, supreme, surpassing, telling,
   throned, topless, toplofty, topping, totalitarian, towering,
   towery, transcendent, transcendental, transcending, unforgettable,
   uplifted, upper, upreared, weighty, well-known