The Collaborative International Dictionary of English v.0.48:

Interlace \In`ter*lace"\, v. t. & i. [imp. & p. p. Interlaced;
   p. pr. & vb. n. Interlacing.] [OE. entrelacen, F.
   entrelacer. See Inter-, and Lace.]
   To unite, as by lacing together; to insert or interpose one
   thing within another; to intertwine; to interweave.
   [1913 Webster]

         Severed into stripes
         That interlaced each other.              --Cowper.
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         The epic way is everywhere interlaced with dialogue.
                                                  --Dryden.
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   Interlacing arches (Arch.), arches, usually circular, so
      constructed that their archivolts intersect and seem to be
      interlaced.
      [1913 Webster]

WordNet (r) 3.0 (2006):

interlaced
    adj 1: having a pattern of fretwork or latticework [syn:
           fretted, interlaced, latticed, latticelike]