Pecten

1. n. The comb of a scorpion. See Comb, 4 (b).
2. n. 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.
3. n. The pubic bone.
4. n. Any species of bivalve mollusks of the genus Pecten, and numerous allied genera (family Pectinidae); a scallop. See Scallop.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.