What does "emancipate" mean?

Emancipate: To set free from the power of another; to liberate; as: (a) To set free, as a minor from a parent; as, a father may emancipate a child. (b) To set free from bondage; to give freedom to; to manumit; as, to emancipate a slave, or a country. Brasidas . . . declaring that he was sent to emancipate Hellas. Jowett (Thucyd. ). (c) To free from any controlling influence, especially from anything which exerts undue or evil influence; as, to emancipate one from prejudices or error. From how many troublesome and slavish impertinences . . . he had emancipated and freed himself. Evelyn. To emancipate the human conscience. A. W. Ward.