Main Entry: crust

Pronunciation: \ˈkrəst\

Function: noun

Etymology: Middle English, from Latin crusta; akin to Old English hrūse earth, Greek kryos icy cold, krystallos ice, crystal

Date: 14th century

1 a : the hardened exterior or surface part of bread b : a piece of this or of bread grown dry or hard
2 : the pastry cover of a pie
3 : a hard or brittle external coat or covering: 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 of dried secretions or exudate; especially : scab
4 : gall, nerve

— crust verb

— crust·al \ˈkrəs-t^əl\ adjective

— crust·less \ˈkrəs(t)-ləs\ adjective