Definition of "crust" []

• The hard outer portion or surface area of bread. (noun)
• A piece of bread consisting mostly of the hard outer portion. (noun)
• A piece of bread that has become hard and dry. (noun)
• A pastry shell, as of a pie or tart. (noun)
• A hard crisp covering or surface: snow with a firm crust. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "_the level in the crust at which the rocks are softened is nearer to the surface in the geosynclines than it is elsewhere in the normal crust_ (Pl. XV, p. 118)."
• "Bake for 30 to 40 minutes, until the crust is a golden color."
• "I love the holes in this one and the crust is amazing, I think it is basically the same bread I make in my Römertopf, but less fuss."