crust

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

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

3. n. The cover or case of a pie, in distinction from the soft contents. Source: opted

4. n. The dough, or mass of doughy paste, cooked with a potpie; -- also called dumpling. Source: opted

5. n. The exterior portion of the earth, formerly universally supposed to inclose a molten interior. Source: opted

6. n. The shell of crabs, lobsters, etc. Source: opted

7. n. A hard mass, made up of dried secretions blood, or pus, occurring upon the surface of the body. Source: opted

8. n. An incrustation on the interior of wine bottles, the result of the ripening of the wine; a deposit of tartar, etc. See Beeswing. Source: opted

9. n. To cover with a crust; to cover or line with an incrustation; to incrust. Source: opted

10. v. i. To gather or contract into a hard crust; to become incrusted. Source: opted

11. n. the outer layer of the Earth Source: wordnet

12. n. a hard outer layer that covers something Source: wordnet

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