Crust
/kɹʌst/
noun
A more solid, dense or hard layer on a surface or boundary.
The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc.
An outer layer composed of pastry
Synonyms: daily bread, income, livelihood
verb
To cover with a crust.
To form a crust.
noun
A subgenre of punk rock, derived from hardcore punk with extreme metal elements, often with pessimistic lyrics about political and social ills.
Synonyms: crust, crustcore, stenchcore