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crust

hard outer layer / to cover with a layer / to form a hard surface

/kɹʌst/

Transitive VerbIntransitive Verb[C/U] Both
pl: crustspast: crustedpp: crusteding: crusting

This word evokes a tactile sense of rigidity and protection. It suggests a boundary that separates a soft or fluid interior from a harsh external environment, whether that is the fluffy center of a loaf of bread or the molten mantle beneath the planet's surface. In culinary contexts, it carries a connotation of texture and contrast, often associated with the satisfying crunch of a well-baked pastry. When used to describe dirt or salt, it shifts toward a negative or stagnant feeling, implying a buildup of residue over time.

Countable when referring to a specific piece of bread or a distinct type of pastry. Uncountable when referring to the geological layer of the planet or a general layer of dried substance.

💬Casual Conversation

🎬Tuesday afternoon, Ryan is gaming while Jackson texts him about a failed cooking attempt.
Jackson

This homemade pizza is mid. The crust is basically a brick.

Jackson
Ryan
Ryan

damn that's crazy

💡
Jackson uses the slang 'mid' to describe something mediocre or disappointing. Ryan responds with a dismissive, generic phrase ('damn that's crazy') typical of his oblivious and low-effort communication style.

Meanings

Nounhard outer layer

The hardened outer layer of something, such as bread, a pie, or the Earth's surface.

"He cut the crust off the sandwich before eating it."

Transitive Verbto cover with a layer
[~ to cover something with a hard outer layer]

To cover something with a hard outer layer.

"The chef decided to crust the fish in crushed hazelnuts."

Intransitive Verbto form a hard surface
[~ to become covered with a hard layer]

To become covered with a hard layer of a substance.

"The salt began to crust over the surface of the pond."

Etymology

Derived from the Old French "croste," which originates from the Latin "crusta," meaning a hard shell or rind. The term evolved from the Latin root "crustra," referring to the crumbs or the hardened exterior of baked goods, eventually entering Middle English to describe both culinary and geological surfaces.

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Last Updated: June 8, 2026Report an Error