adj. Pertaining to, or resembling, silver; made of, or sounding like, silver; silvery.adj. Of or pertaining to the Argentine Republic in South America.n. A siliceous variety of calcite, or carbonate of lime, having a silvery-white, pearly luster, and a waving or curved lamellar structure.n. White metal coated with silver.n. A fish of Europe (Maurolicus Pennantii) with silvery scales. The name is also applied to various fishes of the genus Argentina.n. A citizen of the Argentine Republic; an Argentinian.n. Argentina; in this sense, usually preceded by the.