Meanings
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1
noun
tough, flexible cartilage, especially when encountered in meat
The dogs had left only bone and gristle behind.
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2
noun
figurative: toughness, resilience, or the material from which strength develops
Years of hard training put gristle into the young team's resolve.
Thesaurus
Etymology
From Middle English gristel, from Old English gristel, 'cartilage,' a Germanic word of uncertain deeper origin. Its physical toughness encouraged later figurative uses for resilience or strength not yet fully hardened.