'bonnethead' definitions:

Definition of 'bonnethead'

(from WordNet)
noun
Small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries [syn: shovelhead, bonnethead, bonnet shark, Sphyrna tiburo]

Definition of 'bonnethead'

From: GCIDE
  • bonnet head \bonnet head\, bonnethead \bonnethead\n. (Zool.), small harmless hammerhead shark (Sphyrna tiburio) of the southern United States and West Indies, having a spade-shaped head; abundant in bays and estuaries.
  • Syn: shovelhead, bonnet shark, Sphyrna tiburo. [1913 Webster + WordNet 1.5]