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English definition of “crust”

crust

noun  /krʌst/ us  

crust noun (BREAD)

[C/U] a hard outer covering, esp. on a loaf of bread or a pastry

crust noun (EARTH)

earth science [C] the outer layer of the earth
crustal
adjective [not gradable]  /ˈkrʌs·təl/ us  
earth science crustal displacement
(Definition of crust from the Cambridge Academic Content Dictionary © Cambridge University Press)
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