Bible Dictionary
LADY
Lady may mean a mistress or noble woman in the Old Testament, and may mean princess in certain passages. In 2 John it translates a Greek term that some interpret as a proper name.
Biblical Usage
The word means “mistress” in Isaiah 47:5,7, and “princess” in the relevant passages of Judges and Esther according to the Revised Version in Esther. In 2 John it is used in the address to the chosen lady, though some regard the word as a proper name.