'My Lord the King' in the Bible

And the prince of the eunuchs said unto Daniel, I fear my lord the king, who hath appointed your meat and your drink: for why should he see your faces worse liking than the children which are of your sort? then shall ye make me endanger my head to the king.

This is the interpretation, O king, and this is the decree of the most High, which is come upon my lord the king: