Rock
- In geology, rock is a substance composed of minerals and classified according to mineral composition.
- Rocks are generally classified by the processes that formed them, and are thus separated into igneous, sedimentary, and metamorphic rocks. Igneous rocks are freshly formed from molten magma, sedimentary rocks by deposition and compression of particulate matter, and metamorphic rocks by either of the first two categories after being changed by the effects of temperature and pressure. In cases where organic material leaves behind an imprint of itself in rock, the result is known as a fossil.
- In music, rock is sometimes used as a short form of rock and roll, but also refers to a harder form of music derived from rock and roll.
- Rock is a confectionery made and sold in many of the UK's seaside holiday resorts. It is made from sugar with colouring and flavouring, and formed into sticks about 1/2 inch in diameter and 12 inches long. It is usually made with the name of the resort formed into the middle of the stick, and can seen all the way through.