Count (ct) [4] : A measure of size used in the U.S. for shrimp and similar items described by the number of items per pound. Thus "50 count" shrimp weigh an average of 1/50 pound each
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}