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| crust [ krust ] |
noun (plural crusts) |
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| Definition: |
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1. outer part of bread: the thin, usually hard or crisp outer part of a loaf or slice of bread
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2. piece of bread: a piece of bread that is mostly crust or is stale and dry
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3. pastry for pie: the pastry that wholly or partly encases a pie or tart
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4. hard upper layer: a crisp, hard, or thick outer layer or coating that develops on something
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5. geology solid outer layer of Earth: the thin outermost layer of Earth, approximately one percent of Earth's volume, that varies in thickness and has a different composition from the interior. Other terrestrial planets are believed to have crusts.
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6. medicine scab: a dry hardened outer layer of blood, pus, or other bodily secretion that forms over a cut or sore
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7. wine layer of potassium tartrate: a thin layer of potassium tartrate that forms on the inside of some wine and port bottles as the contents mature
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8. biology body covering: the hard outermost body covering in some living organisms, such as lichens and crustaceans
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verb (past and past participle crust·ed, present participle crust·ing, 3rd person present singular crusts) |
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| Definition: |
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1. intransitive verb develop as crust: to form into a crust
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2. transitive and intransitive verb make or become encrusted: to cover something with a crust or become covered with a crust
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| [14th century. Via Old French crouste< Latin crusta "rind, shell"] |
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