Definition of "touchstones" [touchstones]

• Plural form of touchstone. (noun)

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• "His touchstones were the Roman Coliseum and the Taj Mahal."
• "Whether it is in our own lives or the life of a communal effort like the early space program, it is important to preserve "touchstones"."
• "You start to not have those kind of touchstones we all need."