The Collaborative International Dictionary of English v.0.48:

Intergrave \In`ter*grave"\, v. t. [imp. Intergraved; p. p.
   Intergraved or Intergraven (?); p. pr. & vb. n.
   Intergraving.]
   To grave or carve between; to engrave in the alternate
   sections.
   [1913 Webster]

         The work itself of the bases, was intergraven. --3
                                                  Kings vii. 28
                                                  (Douay
                                                  version. )
   Interhemal