1) Bonnet shark 2) Bonnethead 3) Canadian rock music group 4) Hammerhead 5) Hammerhead shark 6) Sphyrna tiburo 1) Bonnethead 
• (n.) A shark (Sphryna tiburio) allied to the hammerhead, and native of the warmer parts of the Atlantic and Pacific oceans; -- called also bonnet shark.
Shov'el·head` noun (Zoology) A shark ( Sphryna tiburio ) allied to the hammerhead, and native of the warmer parts of the Atlantic and Pacific oceans; -- called also bonnet shark . 
[n] - small harmless hammerhead having a spade-shaped head
bonnethead noun small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries
Shovelhead is the name of the Harley-Davidson engine used from 1966-1985. The shovel engine has rock