The Collaborative International Dictionary of English v.0.48:
Cannibalism \Can"ni*bal*ism\, n. [Cf. F. cannibalisme.] The act or practice of eating human flesh by mankind. Hence; Murderous cruelty; barbarity. --Berke. [1913 Webster]WordNet (r) 3.0 (2006):
cannibalism n 1: the practice of eating the flesh of your own kind