A more solid, dense or hard layer on a surface or boundary. / The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc. / An outer layer composed of pastry

(transitive) To cover with a crust. / (intransitive) To form a crust.

plural of crust

Third-person singular simple present indicative form of crust

simple past tense and past participle of crust

present participle of crust

Encrusted material.

plural of crusting

plural of upper crust

Used other than figuratively or idiomatically: see upper, crust. The topmost layer of a bread, pastry dish, or other item with a hardened coating.