What is the meaning of crust matter?

"Crust matter" is not a standard term with a defined meaning. It's possible it's a phrase used in a specific context, like:

* A metaphorical expression: Perhaps it describes something superficial or unimportant, like the "crust" of a bread loaf.

* A technical term: It might be used in a particular field, like geology, where "crust" refers to the Earth's outer layer.

* A misspelling: It could be a misspelling of "crust matters," meaning something is important or significant.

To understand the meaning, you'd need more context. Can you please provide more information?

For example:

* Where did you encounter this phrase?

* What was the surrounding text or conversation?

* Was it spoken or written?

With more context, I can help you understand the intended meaning of "crust matter."