noun / verb
crust
KRUHST/krʌst/
A hard outer covering, or to form or cover with one.
The bread's hard crust surrounds its soft interior.

Etymology
Latin crusta named a rind, shell, or similar covering. English first used crust for bread’s hard exterior, then extended it to other thin, hard outer layers, including the earth’s.
In context
give your Brioche that gorgeous Golden Crust then bake for about 30 to 35 minutes
More examples
- Dried mud crusted the boots.
- A crust formed over the cooled mixture.
- The spilled syrup was crusting around the lid.
Forms
crust · crusts · crusted · crusting