A borrow pit is a term commonly used in construction to refer to a place where soil or other materials are excavated for use in another area of the construction project. Some common synonyms for the term borrow pit include extraction pit, excavation site, quarry, and dig site. In some cases, the term may also refer to a location where sediment is removed from a riverbed or other body of water. Regardless of the specific context, the purpose of a borrow pit is to provide construction workers with access to materials that can be used to build roads, buildings, and other structures.