We found one dictionary that defines the word cat's silver:

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1. cat's silver: Wiktionary

Definitions from Wiktionary (cat's silver) ▸ noun:  (archaic) mica ▸ Words similar to cat's silver ▸ Usage examples for cat's silver ▸ Idioms related to cat's silver ▸ Wikipedia articles (New!) ▸ Words that often appear near cat's silver ▸ Rhymes of cat's silver ▸ Invented words related to cat's silver