1. (

• crust ,
• Earth's_crust

) the outer layer of the Earth ;

2. (

• crust ,
• incrustation ,
• encrustation

) a hard outer layer that covers something ;

3. (

• crust ,
• gall ,
• impertinence ,
• impudence ,
• insolence ,
• cheekiness ,
• freshness ,

) the trait of being rude and impertinent; inclined to take liberties ;

1. (

• crust

) form a crust or form into a crust; "The bread crusted in the oven" ;