1º_ It is considered a compositional element, although in Spanish the prefix quiro- ("hand") would be more adjusted, at most "cir-", although I think this is only used in "surgery" and relatives. 2º_ It is a Castilianization, like kir, of the Hebrew voice 1511; 1460; 1497; 1512; ( kir "wall, fortress" ) , several times mentioned in the Tanakh ("canonical holy books of Judaism" ).
