Entry 2 senses · 2 variants Webster, 1913 Cannibal /kăn'-əb-əl/ · Can·ni·bal · IPA /ˈkænɪbəl/ n. a. 01 n. A human being that eats human flesh; hence, any that devours its own kind. 1. A human being that eats human flesh; hence, any that devours its own kind. 02 a. Relating to cannibals or cannibalism. 1. Relating to cannibals or cannibalism.