The Collaborative International Dictionary of English v.0.48:

Calver \Cal"ver\, v. i.
   To bear, or be susceptible of, being calvered; as, grayling's
   flesh will calver. --Catton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Calver \Cal"ver\ (k[a^]l"v[~e]r), v. i.
   1. To cut in slices and pickle, as salmon. [Obs.]
      [1913 Webster]

            For a change, leave calvered salmon and eat sprats.
                                                  --Massinger.
      [1913 Webster]

   2. To crimp; as, calvered salmon. --Nares.
      [1913 Webster]