Shov·el·head n. Zool. A shark (Sphryna tiburio) allied to the hammerhead, and native of the warmer parts of the Atlantic and Pacific oceans; -- called also bonnet shark.
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bonnet shark
n : small harmless hammerhead having a spade-shaped head;
abundant in bays and estuaries [syn: shovelhead, bonnethead,
Sphyrna tiburo]