a stupid person; these words are used to express a low opinion of someone's intelligence
source: WordNet 3.0
the striking part of a hammer
source: WordNet 3.0
medium-sized live-bearing shark with eyes at either end of a flattened hammer-shaped head; worldwide in warm waters; can be dangerous
source: WordNet 3.0
A shark of the genus Sphyrna or Zygæna, having the eyes set on projections from the sides of the head, which gives it a hammer shape. The Sphyrna zygæna is found in the North Atlantic. Called also hammer fish, and balance fish.
