Noun hammerhead shark has 1 sense
  1. hammerhead, hammerhead shark - medium-sized live-bearing shark with eyes at either end of a flattened hammer-shaped head; worldwide in warm waters; can be dangerous
    --1 is a kind of shark
    --1 is a member of Sphyrna, genus Sphyrna
    --1 has particulars:
     smooth hammerhead, Sphyrna zygaena; smalleye hammerhead, Sphyrna tudes; shovelhead, bonnethead, bonnet shark, Sphyrna tiburo
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