Constables meaning : One holding the lowest rank in most Commonwealth police forces. (See also chief constable.) A police officer or an officer with equivalent powers. An officer of a noble court in the Middle Ages, usually a senior army commander. (See also marshal). The warden of a castle. A public officer, usually at municipal level, responsible for maintaining order or serving writs and court orders. (Channel Islands) An elected head of a parish (also known as a connétable) A large butterfly, Dichorragia nesimachus, family Nymphalidae, of Asia.