Touchstone



GRE Barron

解释

GRE 红宝书

• n.试金石;检验标准
• ［英］ n.试金石 ( stone used to test the fineness of gold alloys) ; 检验标准 ( criterion; standard)

Webster Collegiate

noun

• Date: 1530
• 1. a black siliceous stone related to flint and formerly used to test the purity of gold and silver by the streak left on the stone when rubbed by the metal
• 2. a test or criterion for determining the quality or genuineness of a thing
• 3. a fundamental or quintessential part or feature ; basis <a touchstone film of that decade><now considered a touchstone of the city's life — Michael Specter>
• Synonyms: see standard

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