What does "original" mean?

Additional senses

1. 2.Having the power to suggest new thoughts or combinations of thought; inventive; as, an original genius.
2. 3.Before unused or unknown; new; as, a book full of original matter. Original sin (Theol.), the first sin of Adam, as related to its consequences to his descendants of the human race; -- called also total depravity. See Calvinism.
3. 4.Origin; commencement; source. It hath it original from much grief. Shak. And spangled heavens, a shining frame, Their great Original proclaim. Addison.
4. 5.That which precedes all others of its class; archetype; first copy; hence, an original work of art, manuscript, text, and the like, as distinguished from a copy, translation, etc. The Scriptures may be now read in their own original. Milton.
5. 6.An original thinker or writer; an originator. [R.] Men who are bad at copying, yet are good originals. C. G. Leland.
6. 7.A person of marked eccentricity. [Colloq.]
7. 8.(Zoöl. & Bot.) The natural or wild species from which a domesticated or cultivated variety has been derived; as, the wolf is thought by some to be the original of the dog, the blackthorn the original of the plum.