- the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- a slice of bread from the end of a loaf, consisting chiefly of this.
- the pastry covering the outside of a pie or other dish.
- a piece of stale bread.
- any more or less hard external covering or coating: a crust of snow.
- the outer layer of the earth, about 22 miles (35 km) deep under the continents (continental crust ) and 6 miles (10 km) deep under the oceans (oceanic crust ).
- a scab or eschar.
- unabashed self-assertiveness; nerve; gall: He had a lot of crust going to the party without an invitation.
- deposit from wine, as it ripens during aging, on the interior of bottles, consisting of tartar and coloring matter.
- the hard outer shell or covering of an animal.
- a living or livelihood: What do you do for a crust?
- to cover with or as with a crust; encrust.
- to form (something) into a crust.
- to form or contract a crust.
- to form into a crust.
- the hard outer part of bread
- a piece of bread consisting mainly of this
- the baked shell of a pie, tart, etc
- any hard or stiff outer covering or surface
- the solid outer shell of the earth, with an average thickness of 30–35 km in continental regions and 5 km beneath the oceans, forming the upper part of the lithosphere and lying immediately above the mantle, from which it is separated by the Mohorovičić discontinuity
- the dry covering of a skin sore or lesion; scab
- a layer of acid potassium tartrate deposited by some wine, esp port, on the inside of the bottle
- the hard outer layer of such organisms as lichens and crustaceans
- impertinence
- a living (esp in the phrase earn a crust)
- to cover with or acquire a crust
- to form or be formed into a crust
