The exterior portion of the earth, formerly universally supposed to inclose a molten interior.

The shell of crabs, lobsters, etc.

The outermost layer of the lithosphere, consisting of relatively light, low-melting temperature materials. Continental crust consists largely of granite and granodiorite. Oceanic crust is mostly basalt.

The solid outer-most layer of the Earth. There are two types: oceanic crust and continental crust. plate Back to Resources Associated words

A hard mass, made up of dried secretions blood, or pus, occurring upon the surface of the body.

Leather which has been tanned (treated to become nonperishable) but not colored or otherwise finished.

The medical usage for scab. The formation resulting from tissue fluid and/or blood slowly discharging onto the skin's surface.

scablike coating of dried blood, pus, or drainage that covers wounds or damaged skin

The hard external coat or covering of anything; the hard exterior surface or outer shell; an incrustation; as, a crust of snow.

The hard exterior or surface of bread, in distinction from the soft part or crumb; or a piece of bread grown dry or hard.

The cover or case of a pie, in distinction from the soft contents.

An incrustation on the interior of wine bottles, the result of the ripening of the wine; a deposit of tartar, etc. See Beeswing.

The sediment formed by vintage Port.

Sediment found on the inside of a bottle of wine, especially port – brought about by long bottle maturation.

Crust is the heavy sediment, which forms in a wine.

A crust sometimes found in older red wine and port bottles. Usually harmless.