1
a
: the hardened exterior or surface part of bread
b
: a piece of this or of bread grown dry or hard
2
a
: the pastry shell of a pie : piecrust
b
: the bready layer that forms the foundation of a pizza
3
: a hard or brittle external coat or covering: such as
a
: a hard surface layer (as of soil or snow)
b
: the outer part of a planet, moon, or asteroid composed essentially of crystalline rocks
c
: a deposit built up on the interior surface of a wine bottle during long aging
d
: an encrusting deposit (as of the eye) of dried secretions or exudate
also
: scab
Examples of crust in a Sentence
Her children prefer to eat their sandwiches with the crust cut off.
a pie with flaky crust
He likes pizza with thin crust.
Recent Examples on the Web
Only the Earth's brittle crust and descending cool slabs of tectonic plates can store and release elastic energy through fault ruptures.
—
Amanda Castro, MSNBC Newsweek, 27 Oct. 2025
Cold butter results in a flakier crust once baked.
—Sarah Martens, Better Homes & Gardens, 27 Oct. 2025
No rolling out pie crust or making a floury mess, because this dump cake bakes in one pan for just 20 minutes.
—Melinda Salchert, Southern Living, 26 Oct. 2025
Flaky pie crust filled with chocolate chip cookie dough.
—Cheryl V. Jackson, IndyStar, 24 Oct. 2025
See All Example Sentences for crust
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Amanda Castro, MSNBC Newsweek, 27 Oct. 2025
Cold butter results in a flakier crust once baked.
—Sarah Martens, Better Homes & Gardens, 27 Oct. 2025
No rolling out pie crust or making a floury mess, because this dump cake bakes in one pan for just 20 minutes.
—Melinda Salchert, Southern Living, 26 Oct. 2025
Flaky pie crust filled with chocolate chip cookie dough.
—Cheryl V. Jackson, IndyStar, 24 Oct. 2025
See All Example Sentences for crust
Cite this Entry
“Crust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crust. Accessed 29 Oct. 2025.
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Medical Definition
crust
noun1
2
: an encrusting deposit of serum, cellular debris, and bacteria present over or about lesions in some skin diseases (as impetigo or eczema)
crust
verb
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