Source : WordNet®

Africanized bee
     n : a strain of bees that originated in Brazil in the 1950s as a
         cross between an aggressive African bee and a honeybee;
         retains most of the traits of the African bee; now spread
         as far north as Texas [syn: {Africanized honey bee}, {killer
         bee}, {Apis mellifera scutellata}, {Apis mellifera
         adansonii}]