\Pec"ten\, n. [L. pecten, -inis, a comb, a kind of
shellfish. See {Pectinate}.]
1. (Anat.)
   (a) A vascular pigmented membrane projecting into the
       vitreous humor within the globe of the eye in birds,
       and in many reptiles and fishes; -- also called
       {marsupium}.
   (b) The pubic bone.
2. (Zo["o]l.) Any species of bivalve mollusks of the genus
   {Pecten}, and numerous allied genera (family
   {Pectinid[ae]}); a scallop. See {Scallop}.
3. (Zo["o]l.) The comb of a scorpion. See {Comb}, 4
   (b) .