" ought" is old English ( Elizabethian) for Anything of moral correctness or moral error..It is used in the sense of Moral obligation.
For example...when Jesus says that if you are in the temple offering your gift( offering) And you remember your brother has ought against you, to leave your offering there and go be reconciled to him.
He is saying "if you remember there is a moral issue with your fellow man where you are the one who wronged him/her, ...to have done something immoral to them it is your moral obligation before God to correct your error. To offer repentance, reconciliation and Rehabilitation..to be reconciled... for what sense does it make for you to want reconciliation with God for your errors, but yet not offer reconciliation with someone you have wronged?
Ought means anything that is of moral obligation...that it is of your moral obligation.