The Collaborative International Dictionary of English v.0.48:

Vermiculate \Ver*mic"u*late\, v. t. [imp. & p. p.
   Vermiculated; p. pr. & vb. n. Vermiculating.] [L.
   vermiculatus inlaid so as to resemble the tracks of worms, p.
   p. of vermiculari to be full of worms, vermiculus a little
   worm. See Vermicular.]
   To form or work, as by inlaying, with irregular lines or
   impressions resembling the tracks of worms, or appearing as
   if formed by the motion of worms.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Vermiculate \Ver*mic"u*late\, a.
   1. Wormlike in shape; covered with wormlike elevations;
      marked with irregular fine lines of color, or with
      irregular wavy impressed lines like worm tracks; as, a
      vermiculate nut.
      [1913 Webster]

   2. Crawling or creeping like a worm; hence, insinuating;
      sophistical. "Vermiculate questions." --Bacon.
      "Vermiculate logic." --R. Choate.
      [1913 Webster]

WordNet (r) 3.0 (2006):

vermiculate
    adj 1: infested with or damaged (as if eaten) by worms [syn:
           vermiculate, worm-eaten, wormy]
    2: decorated with wormlike tracery or markings; "vermicular (or
       vermiculated) stonework" [syn: vermicular, vermiculate,
       vermiculated]
    v 1: decorate with wavy or winding lines