Webster's Dictionary 
(1): ( a.) Conformed to accepted rules of right; acting in conformity with such rules; virtuous; just; as, a moral man. Used sometimes in distinction from religious; as, a moral rather than a religious life.
(2): ( n.) The inner meaning or significance of a fable, a narrative, an occurrence, an experience, etc.; the practical lesson which anything is designed or fitted to teach; the doctrine meant to be inculcated by a fiction; a maxim.
(3): ( a.) Acting upon or through one's moral nature or sense of right, or suited to act in such a manner; as, a moral arguments; moral considerations. Sometimes opposed to material and physical; as, moral pressure or support.
(4): ( a.) Capable of right and wrong action or of being governed by a sense of right; subject to the law of duty.
(5): ( n.) A morality play. See Morality, 5.
(6): ( v. i.) To moralize.
(7): ( a.) Serving to teach or convey a moral; as, a moral lesson; moral tales.
(8): ( a.) Supported by reason or probability; practically sufficient; - opposed to legal or demonstrable; as, a moral evidence; a moral certainty.
(9): ( n.) The doctrine or practice of the duties of life; manner of living as regards right and wrong; conduct; behavior; - usually in the plural.
(10): ( a.) Relating to duty or obligation; pertaining to those intentions and actions of which right and wrong, virtue and vice, are predicated, or to the rules by which such intentions and actions ought to be directed; relating to the practice, manners, or conduct of men as social beings in relation to each other, as respects right and wrong, so far as they are properly subject to rules.
Charles Buck Theological Dictionary 
Relating to the action or conduct of life, or that which determines an action to be good or virtuous.
2. A moral agent is a being that is capable of those actions that have a moral quality, and which can properly be denominated good or evil in a moral sense.
3. A moral certainty is a very strong probability, and is used in contradistinction to mathematical probability.
4. Moral fitness is the agreement of the actions of any intelligent being with the nature, circumstances, and relation of things.
5. A moral impossibility is a very great or insuperable difficulty; opposed to a natural impossibility.
6. Moral obligation is the necessity of doing or omitting any action in order to be happy and good.
7. Moral Philosophy is the science of manners, the knowledge of our duty and felicity.
8. Moral sense, that whereby we perceive what is good, virtuous, and beautiful in actions, manners, and characters; or it is a kind of satisfaction in the mind arising from the contemplation of those actions of rational agents which we call good or virtuous: some call this natural conscience, others intuitive perception of right and wrong, &c.
See article SENSE.
9. Moral law.
See LAW, EVIDENCE.