To make, or declare to be, sacred; to appropriate to sacred uses; to set apart, dedicate, or devote, to the service or worship of God; as, to consecrate a church; to give (one's self) unreservedly, as to the service of God.
To consecrate is to set aside for sacred use. The term is usually associated with objects although bishops and sovereigns are consecrated for a particular role. The bread and wine at the Eucharist is ‘consecrated' by a priest for sacramental use. A churchyard is consecrated by a bishop for the burial of the dead.
In general, to set apart a thing or a person from a common and profane use to a sacred use, or to dedicate a specific person(s) or thing(s) to the service of God or of the Blessed Virgin Mary by prayers, rites and ceremonies.