ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
1. : the striking part of a hammer ; specifically : a part of a hammer in a piano action that strikes the strings
2. : one that is dense or stupid : blockhead , numskull
a big hammerhead but even if he had had a smart head, a no-good horse — Richard Wormser
3. : something that resembles the striking part of a hammer: as
a. : any of various medium-sized sharks of the family Sphyrnidae that have the eyes at the ends of lateral extensions of the flattened head, are active voracious fishes sometimes considered man-eaters, are widely distributed in warm seas, and include some (as Sphyrna zygaena and S. tudes ) which are fished for their hides and vitamin-rich livers
b.
(1) : hog sucker
(2) : hammerheaded bat
(3) or hammerheaded stork ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ ̷ ̷- : hammerkop