noun
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A more solid, dense or hard layer on a surface or boundary.
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The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc.
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An outer layer composed of pastry
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The bread-like base of a pizza.
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(British, Australia, New Zealand, Ireland, Canada, Northern US) A slice of bread cut from the end of a loaf; the heel.
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(geology) The outermost layer of the lithosphere of the Earth.
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(astronomy, by extension) The outermost layer of any terrestrial planet.
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The shell of crabs, lobsters, etc.
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(British, Australia, informal) A living.
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(uncountable, informal) Nerve, gall.
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(UK, Australia, slang, dated) The head.
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(music) Ellipsis of crust punk (a subgenre of punk music)