hammerhead

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Related to Hammer head: hammerhead shark, hammerhead

hammerhead,

common name for a heavy-looking, heronlike bird, Scopus umbretta. Its plumage is brown with light and dark glossy, purplish streaks on the wings and body. It has short legs, partially webbed feet, and a heavy, wide, moderately long, black bill. Its stiff, backward-pointing crest, along with its peculiar bill, give its head a hammer-shaped appearance. Both sexes are similarly arrayed. Long-winged and long-tailed, the hammerhead, or hammerkop (as it is called in Africa), may reach a body length of 20 in. (51 cm). It is an inhabitant of the marshes and mangrove swamps of southern Arabia, Africa, and Madagascar, where it feeds primarily on aquatic animals, such as water insects, small fish, and amphibians. It often perches on the back of hippopotamuses, searching for frogs. Hammerheads reside singly, in pairs, or in small flocks, near water and seldom far from trees, in the forks of which they build intricate domed nests, some 3 to 6 ft (91.5–183 cm) or more in diameter. The nests, to which the birds return each year, are complex, three-compartmented structures, lined with mud and dung, and ornamented outside with bright-colored objects. The female lays a clutch of three to six white eggs. Both sexes care for the highly dependent young. According to native superstitions, hammerheads are evil omens, and it is considered bad luck to harm them. Such superstitions have kept the birds somewhat protected. Hammerheads are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Ciconiiformes, family Scopidae.

hammerhead

[′ham·ər‚hed]
(design engineering)
The striking part of a hammer.

hammerhead

1. any shark of the genus Sphyrna and family Sphyrnidae, having a flattened hammer-shaped head
2. a heavily built tropical African wading bird, Scopus umbretta, related to the herons, having a dark plumage and a long backward-pointing crest: family Scopidae, order Ciconiiformes
3. a large African fruit bat, Hypsignathus monstrosus, with a large square head and hammer-shaped muzzle
References in periodicals archive ?
The hammer head design allows the upper and lower head section to be closed and opened separately.
But you have to put a block under the cat's paw to develop good leverage, as in Photo 2, or slide your hammer head under it to shim it up.
As you move the hammer head forcefully to the left, the weight will shift to the ball of the left foot as the right leg is lifted.
Tenders are invited for Hammer Head Bolt M8x30as Per 1 11012.
Here is Junior confronting the nightmare of what has happened to Miss Peebs's piano: "The rich mahogany surface had been gouged with some dangerously sharp tool and marked by blows the size of hammer heads.
Their major applications include automotive items, caster wheels, and industrial goods such as drive belts, soft-faced hammer heads and gaskets.