I know what cartilage is, but I was looking for the every day synonym to the word in the context of meat and eating, not in the context of human anatomy. I found out that gristle maybe the informal synonym I was looking for, but I want to confirm what I think before adopting the word.
Note that gristle was described as a nontechnical name under the definition of cartilage.
Update: The reason I am asking is that my daughter asked me about the name of that kinda white solid matter covering the end of a bone while she was eating a chicken thigh. I told her it is called cartilage, but then this is more of a technical term than an everyday word for a child to use.