From The Collaborative International Dictionary of English v.0.48 :
Crappie \Crap"pie\ (kr?p"p?), n. (Zool.) A kind of fresh-water bass of the genus Pomoxys, found in the rivers of the Southern United States and Mississippi valley. There are several species. [Written also croppie.] [1913 Webster]From WordNet (r) 3.0 (2006) :
crappie n 1: small sunfishes of the genus Pomoxis of central United States rivers 2: small sunfishes of central United States rivers