|n.||1.||(Zool.) A shark of the genus Cestracion, and of related genera. The posterior teeth form a pavement of bony plates for crushing shellfish. Most of the species are extinct. The Port Jackson shark and a similar one found in California are living examples.|
|a.||1.||(Zool.) Pertaining to, or characteristic of, the genus Cestracion.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.