The Collaborative International Dictionary of English v.0.48:

Concede \Con*cede"\ (k[o^]n*s[=e]d"), v. t. [imp. & p. p.
   Conceded; p. pr. & vb. n. Conceding.] [L. concedere,
   concessum; con- + cedere to go along, give way, yield: cf. F.
   conc['e]der. See Cede.]
   1. To yield or suffer; to surrender; to grant; as, to concede
      the point in question. --Boyle.
      [1913 Webster]

   2. To grant, as a right or privilege; to make concession of.
      [1913 Webster]

   3. To admit to be true; to acknowledge.
      [1913 Webster]

            We concede that their citizens were those who lived
            under different forms.                --Burke.

   Syn: To grant; allow; admit; yield; surrender.
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The Collaborative International Dictionary of English v.0.48:

Concede \Con*cede"\, v. i.
   To yield or make concession.
   [1913 Webster]

         I wished you to concede to America, at a time when she
         prayed concession at our feet.           --Burke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

concede
    v 1: admit (to a wrongdoing); "She confessed that she had taken
         the money" [syn: concede, profess, confess]
    2: be willing to concede; "I grant you this much" [syn:
       concede, yield, grant]
    3: give over; surrender or relinquish to the physical control of
       another [syn: concede, yield, cede, grant]
    4: acknowledge defeat; "The candidate conceded after enough
       votes had come in to show that he would lose"