1. to refuse to have, take, recognize, etc.: to reject the offer of a better job.
2. to refuse to grant (a request, demand, etc.).
3. to refuse to accept (someone or something); rebuff: The other children rejected him. The publisher rejected the author's latest novel.
4. to discard as useless or unsatisfactory: The mind rejects painful memories.
5. to cast out or eject; vomit.
6. to cast out or off.
7. Med.(of a human or other animal) to have an immunological reaction against (a transplanted organ or grafted tissue): If tissue types are not matched properly, a patient undergoing a transplant will reject the graft.
something rejected, as an imperfect article.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.