Definition of crust in English:


Line breaks: crust
Pronunciation: /krʌst


  • 1The tough outer part of a loaf of bread: a sandwich with the crusts cut off [mass noun]: I tore off several pieces of crust from the loaf
    More example sentences
    • They gave their Great Niece the red carpet treatment, cooking up a feast of scones with jam and cream, fruit cake, sponge cake, Anzac biscuits and a genteel plate of sandwiches with the crusts cut off.
    • It was a classic British summer tea; small smoked salmon sandwiches with the crusts cut off; tiny scones with jam and cream the size of a 10p piece and miniature strawberry tarts.
    • And they all traipsed out for another round of triangular sandwiches with the crusts cut off and a wee cup of tea served in the best china.
    outer layer/part, outside, exterior; heel, end, remnant
  • 1.1A hard, dry scrap of bread: a kindly old woman might give her a crust
    More example sentences
    • How often have restaurant forgotten that bread is part of the meal and have given their customers stale, hard crusts.
    • Before long he had me saving scraps of bacon and stray crusts.
    • Others let their babies chomp down on their fingers, or offer dried crusts of bread or peeled carrot sticks (stay nearby in case of choking).
  • 2A hardened layer, coating, or deposit on the surface of something soft: a crust of snow
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    • Many canopy trees have protruding crowns, and light availability at the surface of the canopy crust should also differ depending on the position relative to the apex of the crown.
    • Despite its thin crust of moderate strength, the clay becomes much softer with depth.
    • I had the warm chocolate tart, with a soft crust hiding its delectable molten interior, while a chocolate sauce kept the whole mélange from being cloying.
  • 2.1A layer of pastry covering a pie.
    More example sentences
    • Sometimes this was encased in a rich crust of pastry or dough similar to saffron bread, a form reminiscent of the Scottish black bun.
    • Baked in the oven under a pastry crust and served hot with boiled potatoes and a green vegetable it's a dish fit for a king.
    • You may already be familiar with its crispy crust pastry and mildly spiced creamy filling but now you can prepare this tasty French delicacy in your own kitchen.
  • 2.2The outermost layer of rock of which a planet consists, especially the part of the earth above the mantle: the earth’s crust
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    • In these areas of the Earth's crust, magmatic rocks lie only a short distance below the sea floor.
    • Magmas erupted in continental volcanic arcs typically contain components from many sources in the crust, lithospheric mantle and asthenosphere.
    • If the cracks extend deep enough, the seawater can come into contact with mantle rocks that underlie the crust.
  • 2.3A deposit of tartrates and other substances formed in wine aged in the bottle, especially port.
  • 3British informal A living or livelihood: I’ve been earning a crust wherever I can
    More example sentences
    • The challenge for a society is: how do we teach all our kids to value the future so they have a fair chance of earning a crust later on?
    • It's just there's a distinction between earning a crust by playing what is ostensibly a game and picking up a salary in the black art of sell, sell, sell.
    • Instead, he simply he packed a bag and turfed up in France, playing part-time football and earning a crust working in a garage.
    living, livelihood, means of subsistence, income, daily bread
    informal bread and butter


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  • 1Form into a hard outer layer: the blisters eventually crust over
    More example sentences
    • Nickel allergies cause symptoms like itching, crusting, and blisters.
    • This can be especially true if a hard rain after weeding causes crusting.
    • The breast is stuffed with Saskatoon berry cream cheese, then crusted with crushed pecans.
  • 1.1 [with object] Cover with a hard outer layer: the burns crusted his cheek
    More example sentences
    • It had taken us longer than expected to make the trip back and we were both a total mess with a thick layer of dirt crusting our clothes and flowers stuck in our hair, which was probably every where by now.
    • When I got tired of that I took up fire-gazing, watching the flames crusting the coals with rosy spark edgings.
    • Next morning the valley is crusted in frost as I find the turn-off and wind up 11 km through 135 bends, nine of them hairpins, to reach Snow Farm.



adjective ( Geology )
More example sentences
  • Throughout the world, most of the earthquake activities are confined to plate margin associated with crustal deformation.
  • Glaciation and crustal activity have given the island its unique shape.
  • At the bottom of the Pacific Ocean is a daisy chain of volcanoes, faults and crustal fractures.


Middle English: from Old French crouste, from Latin crusta 'rind, shell, crust'.

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Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody