1. Earth Science:
* The Earth's crust is the outermost solid layer of the Earth. It is a relatively thin layer compared to the mantle and core, and is composed of various types of rocks. The crust is further divided into oceanic crust (thinner and denser) and continental crust (thicker and less dense).
2. Food:
* Crust refers to the outer, usually hard or crispy layer of baked goods like bread, pizza, pies, and pastries. It's typically formed by the interaction of heat and moisture on the surface of the dough or batter.
3. General:
* In a broader sense, "crust" can refer to any hard, outer layer of something. For example, the crust of snow, the crust of a boil, or even the crust of a glacier.
To understand the meaning of "crust" accurately, it's important to consider the context in which it's used.