Definitions of ancestor

1. someone from whom you are descended ( but usually more remote that a grandparent)

2. someone from whom you are descended ( but usually more remote than a grandparent)

3. An earlier type; a progenitor; as, this fossil animal is regarded as the ancestor of the horse.

4. A person from whom one is descended in direct line; a forefather; a progenitor.

5. One from whom a person has descended: a forefather.

6. A forefather.

7. One from whom a person has descended; the previous possessor.

8. A forefather; a progenitor; a woman is called an ancestress.

9. ANCESTRESS.