Calico is a plain-woven textile. In the United Kingdom, "calico" refers to fabric made from unbleached, and often not fully processed, cotton. It may contain unseparated husk parts, for example. The fabric is less coarse and thick than canvas or denim, but owing to its unfinished and undyed appearance, it is still very cheap. This fabric is called muslin in the United States. As it is an inexpensive and readily available fabric, Calico is often used by tailors in the construction of toile — mockups of a garment for the purpose of testing a pattern. Also known as "Mutton Cloth" is used for wrapping food for cooking underground in a hangi.
In the US, "calico" refers to a printed cotton fabric with a small, all-over pattern, often floral.