crust has definitions from the field of geology
1
[ noun ] (geology) the outer layer of the Earth

Synonyms

Earth's_crust

Used in print

(Richard I. McCosh, "Recreation Site Selection"...)

Notice should be taken_of unusual rock formations , deposits , or shapes of the earth 's crust in your region .

2
[ noun ] a hard outer layer that covers something

Related terms

covering tartar encrust encrust

3
[ verb ] form a crust or form into a crust

Examples

"The bread crusted in the oven"

Related terms

change_surface dry

4
[ noun ] the trait of being rude and impertinent; inclined to take liberties

Related terms

discourtesy chutzpa

*