having a crust; encrusted.
(of a wine) containing a hardened deposit accumulated during aging in the bottle: crusted port.
having the accruals of age; antique.

Origin of crusted

Middle English word dating back to 1350–1400; see origin at crust, -ed3
Related formscrust·ed·ly, adverbun·crust·ed, adjective




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.
Geology. 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).Compare mantle(def 3), core1(def 10).
a scab or eschar.
Slang. 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.
Australian Slang. a living or livelihood: What do you do for a crust?

verb (used with object)

to cover with or as with a crust; encrust.
to form (something) into a crust.

verb (used without object)

to form or contract a crust.
to form into a crust.

Origin of crust

1275–1325; Middle English < Anglo-French, Old French cruste, croste < Latin crusta hard coating, crust
Related formscrust·less, adjectivein·ter·crust, verb (used with object)un·der·crust, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for crusted

Historical Examples of crusted

  • Crusts were covered with yards of new snow, that crusted and were snow-covered again.

    Smoke Bellew

    Jack London

  • He was powerfully built, naked but for a girdled loincloth, which was stained with blood and crusted with dried mire.

    Shadows in the Moonlight

    Robert E. Howard

  • They are covered with a gummy, grayish-yellow deposit or they may be crusted.

    Essentials of Diseases of the Skin

    Henry Weightman Stelwagon

  • The grandee's chair, crusted with carving, was borne along in state.

    The Portal of Dreams

    Charles Neville Buck

  • Poor shuffling Charles the First, crusted over with weakness and folly, deep down in him at last we find the great gentleman.

British Dictionary definitions for crusted



  1. the hard outer part of bread
  2. a piece of bread consisting mainly of this
the baked shell of a pie, tart, etc
any hard or stiff outer covering or surfacea crust of ice
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 discontinuitySee also sial, sima
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
slang impertinence
British, Australian and NZ slang a living (esp in the phrase earn a crust)


to cover with or acquire a crust
to form or be formed into a crust

Word Origin for crust

C14: from Latin crūsta hard surface, rind, shell
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for crusted



early 14c., "hard outer part of bread," from Old French crouste (13c., Modern French croûte) and directly from Latin crusta "rind, crust, shell, bark," from PIE *krus-to- "that which has been hardened," from root *kreus- "to begin to freeze, form a crust" (cf. Sanskrit krud- "make hard, thicken;" Avestan xruzdra- "hard;" Greek krystallos "ice, crystal," kryos "icy cold, frost;" Lettish kruwesis "frozen mud;" Old High German hrosa "ice, crust;" Old English hruse "earth;" Old Norse hroðr "scurf"). Meaning "outer shell of the earth" is from 1550s.



late 14c.; see crust (n.). Related: Crusted; crusting.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for crusted




A hard, crisp covering or surface.
An outer layer or coating formed by the drying of a bodily exudate such as pus or blood; a scab.


To cover with, become covered with, or harden into a crust.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for crusted



The solid, outermost layer of the Earth, lying above the mantle.♦ The crust that includes continents is called continental crust and is about 35.4 to 70 km (22 to 43.4 mi) thick. It consists mostly of rocks, such as granites and granodiorites, that are rich in silica and aluminum, with minor amounts of iron, magnesium, calcium, sodium, and potassium.♦ The crust that includes ocean floors is called oceanic crust and is about 4.8 to 9.7 km (3 to 6 mi) thick. It has a similar composition to that of continental crust, but has higher concentrations of iron, magnesium, and calcium and is denser than continental crust. The predominant type of rock in oceanic crust is basalt.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for crusted


In geology, the outermost layer of the Earth. It overlies the mantle.


The crust includes the continents and the ocean bottom and is generally estimated to be about five to twenty-five miles thick.


The crust is made from relatively lightweight rocks that floated to the surface when the Earth was molten early in its history.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Idioms and Phrases with crusted


see upper crust.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.