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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.

Half of the terrestrial globe, or a projection of the same in a map or picture.

The flat projection or iron shelf at the side of a fire grate, where things are put to be kept warm. Smart.

n. Hobnail liver (Med.), a disease in which the liver is shrunken, hard, and covered with projections like hobnails; one of the forms of cirrhosis of the liver.

The projection or loop on the thill of a vehicle. to which a strap of the harness is attached, to hold back a carriage when going down hill, or in backing; also, the strap or part of the harness so used.

of parts, especially as to size and form; maintaining relative proportion. Homolographic projection, a method of constructing geographical charts or maps, so that the surfaces, as delineated on a plane, have the same relative size as the real surfaces; that is, so that the relative actual areas of the different countr…

drawn or imagined, which passes through the point of sight, and is the chief line in the projection upon which all verticals are fixed, and upon which all vanishing points are found. -- Horizontal parallax. See under Parallax. -- Horizontal plane (Descriptive Geometry), a plane parallel to the horizon, upon which it…

Any natural projection or excrescence from an animal, resembling or thought to resemble a horn in substance or form; esp.:

Having horns or hornlike projections. Gay.

Projections at the masthead, serving as a support for the trestletrees and top to rest on.

ume remains constant. -- Isometrical perspective. See under Perspective. -- Isometrical projection, a species of orthographic projection, in which but a single plane of projection is used. It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equa…

That which projects or juts; a projection.

A projection in a building; also, a pier or mole; a jetty. Shak.

The projection on the tang of the blade of a pocket knife, which prevents the edge of the blade from striking the spring. See Illust. of Pocketknife.

A machine for the projection of chronophotographs upon a screen for the purpose of producing the effect of an animated picture.

Rough dressing by knocking off knobs or projections.

-- called also knuckle duster. [Slang.] Knuckle joint (Mach.), a hinge joint, in which a projection with an eye, on one piece, enters a jaw between two corresponding projections with eyes, on another piece, and is retained by a pin which passes through the eyes and forms the pivot. -- Knuckle of veal (Cookery), the l…

A contorted knot in wood; a crossgrained protuberance; a nodule; a boss or projection.

The thin and scarious projection from the upper end of the sheath of leaf of grass.

A ledge; a right-angled projection.