Emily Dickinson Lexicon

CON-CES'SION, n. [L. concessio, from concedo. See Concede.]

1. The act of granting or yielding; usually implying a demand, claim, or request from the party to whom it is made, and thus distinguished from giving, which is voluntary or spontaneous. The concession of these charters was in a parliamentary way. – Hale.
2. The thing yielded; as, in the treaty of peace, each power made large concessions.
3. In rhetoric or debate, the yielding, granting, or allowing to the opposite party some point or fact that may bear dispute, with a view to obtain something which can not be denied, or to show that even admitting the point conceded, the cause is not with the adverse party, but can be maintained by the advocate on other grounds.
4. Acknowledgment by way of apology; confession of a fault.