The Collaborative International Dictionary of English v.0.48:

Man-eater \Man"-eat`er\, n. (Zool.)
   One who, or that which, has an appetite for human flesh;
   specifically, one of certain large sharks (esp. Carcharodon
   carcharias syn. Carcharodon Rondeleti); also, a lion or a
   tiger which has acquired the habit of feeding upon human
   flesh.
   [1913 Webster]

WordNet (r) 3.0 (2006):

man-eater
    n 1: a person who eats human flesh [syn: cannibal, man-
         eater, anthropophagus, anthropophagite]
    2: large aggressive shark widespread in warm seas; known to
       attack humans [syn: great white shark, white shark, man-
       eater, man-eating shark, Carcharodon carcharias]