Caer

The north gate of Cardiff Castle, following the old Roman fortifications and rebuilt along Roman lines.

Caer (Welsh pronunciation: [kɑːɨr]; Old Welsh: cair or kair) is a placename element in Welsh meaning "stronghold", "fortress", or "citadel",[1] roughly equivalent to an Old English suffix (-ceaster) now variously written as -caster, -cester, and -chester.[2][3]

In modern Welsh orthography, caer is usually written as a prefix, although it was formerly—particularly in Latin—written as a separate word. The Breton equivalent is kêr, which is present in many Breton placenames as the prefix Ker-.

  1. ^ Carlisle, Nicholas. Topographical Dictionary of the Dominion of Wales, "Glossary", p. xxx. W. Bulmer & Co. (London), 1811.
  2. ^ Allen, Grant. "Casters and Chesters" in The Cornhill Magazine, Vol. XLV, pp. 419 ff. Smith, Elder, & Co. (London), 1882.
  3. ^ More precisely, these English placename elements derive from Latin castrum ("fortified post") and its plural form castra ("military camp"), making them the more precise equivalent of the Welsh castell.