or Causey, a massive construction of stones, stakes, and fascines; or an elevation of fat viscous earth, well beaten; serving either as a road in wet marshy places, or as a mole to retain the waters of a pond, or prevent a river from overflowing the lower grounds. See Road.—The word comes from the French chaussée, anciently wrote chauflée; and that from the Latin calcata, or calcata; according to Somner and Spelman, à calcaire. Bergier rather takes the word to have had its rise à pédiment calceïs, quibus teratur. Some derive it from the Latin calx, or French chaux, as supposing it primarily to denote a way paved with chalk stones.

Causeway, (calcetum or calcæa), more usually denotes a common hard raised way, maintained and repaired with stones and rubbish.

Devil's Causeway, a famous work of this kind, which ranges through the county of Northumberland, commonly supposed to be Roman, though Mr Horsley supposes it to be of later times.

Giant's Causeway, is a denomination given to a huge pile of flinty columns in the district of Coleraine in Ireland. See Giant's Causeway.