The Collaborative International Dictionary of English v.0.48:

Argentine \Ar"gen*tine\, n. [Cf. F. argentin, fr. L. argentum
   silver.]
   1. (Min.) A siliceous variety of calcite, or carbonate of
      lime, having a silvery-white, pearly luster, and a waving
      or curved lamellar structure.
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   2. White metal coated with silver. --Simmonds.
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   3. (Zool.) A fish of Europe (Maurolicus Pennantii) with
      silvery scales. The name is also applied to various fishes
      of the genus Argentina.
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   4. A citizen of the Argentine Republic; an Argentinian.
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   5. Argentina; in this sense, usually preceded by the.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Argentine \Ar"gen*tine\ (?; in the 2d sense, commonly ?), a.
   1. Pertaining to, or resembling, silver; made of, or sounding
      like, silver; silvery.
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            Celestial Dian, goddess argentine.    --Shak.
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   2. Of or pertaining to the Argentine Republic in South
      America.
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WordNet (r) 3.0 (2006):

Argentine
    adj 1: of or relating to or characteristic of Argentina or its
           people; "Argentinian tango" [syn: Argentine,
           Argentinian]
    n 1: any of various small silver-scaled salmon-like marine
         fishes