'Maid servant' in the Bible

and all the firstborn in the land of Egypt shall die: even from the firstborn of Pharaoh that sitteth on his seat, unto the firstborn of the maidservant that is in the mill, and all the firstborn of the cattle.

but the seventh day is the Sabbath of the LORD thy God, in it thou shalt do no manner work: neither thou nor thy son, nor thy daughter, neither thy manservant nor thy maidservant, neither thy cattle neither yet the stranger that is within thy gates.

Then take an awl and nail his ear to the door therewith and let him be thy servant forever, and unto thy maidservant thou shalt do likewise.

and ye are risen up against my father's house this day. And have slain his children, even seventy persons upon one stone and have made Abimelech - the son of his maidservant - king over the citizens of Shechem, because he is your brother.