The Collaborative International Dictionary of English v.0.48:

Rank \Rank\, v. t. [imp. & p. p. Ranked (r[a^][ng]kt); p. pr.
   & vb. n. Ranking.]
   1. To place abreast, or in a line.
      [1913 Webster]

   2. To range in a particular class, order, or division; to
      class; also, to dispose methodically; to place in suitable
      classes or order; to classify.
      [1913 Webster]

            Ranking all things under general and special heads.
                                                  --I. Watts.
      [1913 Webster]

            Poets were ranked in the class of philosophers.
                                                  --Broome.
      [1913 Webster]

            Heresy is ranked with idolatry and witchcraft. --Dr.
                                                  H. More.
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   3. To take rank of; to outrank. [U.S.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

ranking
    adj 1: having a higher rank; "superior officer" [syn:
           ranking(a), superior, higher-ranking]
    n 1: position on a scale in relation to others in a sport

Moby Thesaurus II by Grady Ward, 1.0:

127 Moby Thesaurus words for "ranking":
   absolute, all-absorbing, analysis, analyzing, appraisal,
   appraisement, appraising, appreciation, arch, arrangement,
   ascendant, assessing, assessment, assortment, authoritarian,
   authoritative, authorized, autocratic, banner, capital, cardinal,
   cataloging, categorization, central, champion, chief,
   classification, clothed with authority, codification, commanding,
   competent, consequential, considerable, controlling, crowning,
   culling, division, dominant, duly constituted, eminent, empowered,
   estimate, estimation, evaluating, evaluation, evaluative criticism,
   ex officio, filing, first, focal, foremost, gauging, governing,
   gradation, grading, great, grouping, headmost, hegemonic,
   hegemonistic, highest, imperative, important, indexing,
   influential, leading, magisterial, main, master, measurement,
   mighty, momentous, monocratic, official, opinion, overriding,
   overruling, paramount, pigeonholing, placement, potent, powerful,
   predominant, preeminent, premier, preponderant, prestigious,
   prevailing, primal, primary, prime, principal, prominent, puissant,
   ranging, rating, reckoning, ruling, screening, selection, senior,
   sifting, sorting, sorting out, sovereign, star, stellar,
   stratification, subdivision, subordination, substantial,
   supereminent, superior, supreme, tabulation, taxonomy, topflight,
   topmost, totalitarian, triage, typology, uppermost, valuation,
   valuing, view, weighing, weighty