'Female' in the Bible

I have now come to speak with my lord the king about this matter, because the people have made me fearful. But your servant said, 'I will speak to the king! Perhaps the king will do what his female servant asks.

Yes! The king may listen and deliver his female servant from the hand of the man who seeks to remove both me and my son from the inheritance God has given us!'

Now Jonathan and Ahimaaz were staying in En Rogel. A female servant would go and inform them, and they would then go and inform King David. It was not advisable for them to be seen going into the city.

I’m now 80 years old. Can I discern what is pleasant and what is not? Can your servant taste what he eats or drinks? Can I still hear the voice of male and female singers? Why should your servant be an added burden to my lord the king?