Does anyone know of a precise, verifiable definition for the term "cribo"? And, why is it used to refer to Drymarchon and Spilotes? My own searching has turned up little besides literary references to cribo being synonomous with "chicken eater", and also cribo being one of many forms of saying "to sort, separate, select", or in some uses, to "strain, as through a strainer".

How did that term come to be attached to our favorite snakes?