From Longman Dictionary of Contemporary EnglishOur LadyOur Ladyan expression used to mean Mary, the mother of Jesus Christ → lady
Examples from the Corpus
Our Lady• Grace, the sacraments, the church is divine, Our Lady, the saints, etc.• Perhaps by name: Our Lady.• That this fact was well appreciated by civil and ecclesiastical authorities is illustrated by the history of Our Lady of Einsiedeln.• I had a vision of Our Lady.• Why did you say it was Our Lady we saw?Our LadyˌOur ˈLady RRCMary, the mother of Christ