The brown outer part of white bread that you may have to cut off your child's sandwich is an example of crust.
A tiny old piece of the end of a loaf of bread that you might throw to the ducks is an example of a crust of bread.
A layer of dough on the bottom and top of an apple pie is an example of a crust.
A hard film on top of soft pudding is an example of crust.
Snow with a firm crust.
When the ice freezes over a lake, this is an example of when it crusts.
Origin of crust
- Middle English cruste from Old French crouste from Latin crusta kreus- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- Latin crusta (“hard outer covering”) via Anglo-Norman and Old French cruste, from Proto-Indo-European *krus-to (“that which has been hardened”), from *kreus (“to form a crust, begin to freeze”), related to Old Norse hroðr (“scurf”), Old English hruse (“earth”), Old High German hrosa (“crust, ice”), Latvian kruwesis (“frozen mud”), Ancient Greek κρύος (kruos, “frost, icy cold”), κρύσταλλος (krustallos, “crystal, ice”), Avestan [script?] (xruzdra-, “hard”), Sanskrit क्रुड् (kruḍ, “thicken, make hard”)