[1] : The Collaborative International Dictionary of English v.0.48

pectinate \pec"tina`te\, pectinated \pec"tina`ted\, a. l.
   pectinatus, p. pr. of pectinare to comb, from pecten, -inis,
   a comb; cf. gr. pe`kein to comb, as. feax hair, ohg. fahs, e.
   paxwax.
   1. resembling the teeth of a comb.
      1913 webster

   2. nat. hist. having very narrow, close divisions, in
      arrangement and regularity resembling those of a comb;
      comblike; as, a pectinate leaf; pectinated muscles. see
      illust.
      e of antennae.
          1913 webster

   3. interlaced, like two combs. r. "our fingers pectinated,
      or shut together." --sir t. browne.
      1913 webster

   pectinate claw zool., a claw having a serrate edge, found
      in some birds, and supposed to be used in cleaning the
      feathers.
      1913 webster
see also:
antennae pectinate claw 

[2] : WordNet (r) 2.0

pectinate
     adj : like a comb

Pectinate >> P Words
Pectinate, definition of term: Pectinate
pectinate_pag1.html