The Collaborative International Dictionary of English v.0.48:

Conserve \Con*serve"\, v. t. [imp. & p. p. Conserved; p. pr. &
   vb. n. Conserving.] [F. conserver, L. conservare; con- +
   servare to keep, guard. See Serve.]
   1. To keep in a safe or sound state; to save; to preserve; to
      protect.
      [1913 Webster]

            The amity which . . . they meant to conserve and
            maintain with the emperor.            --Strype.
      [1913 Webster]

   2. To prepare with sugar, etc., for the purpose of
      preservation, as fruits, etc.; to make a conserve of.
      [1913 Webster]

WordNet (r) 3.0 (2006):

conserved
    adj 1: protected from harm or loss