gristle

/ˈɡrɪsəl/
noun
  1. Tough, rubbery tissue in meat, especially cartilage, that is unpleasant to eat.
    • He spit out the piece of gristle he had accidentally bitten into.
    • The steak was full of gristle and very hard to chew.
    • My dog loves to gnaw on gristle, but I always remove it from my own meal.
Synonyms
What does "gristle" mean? | whatsthatwordmean | whatsthatwordmean