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A kind of small submarine boat carrying an explosive charge, and projected from a ship against another ship at a distance, or made self-propelling, and otherwise automatic in its action against a distant ship.

A projection from a line of wall, as a fortification, for purposes of defense, as a flanker, either or the same height as the curtain wall or higher.

The intersection of a plane of projection, or an original plane, with a coordinate plane.

the greatest length, and between the nave and choir. In the basilicas, this had often no projection at its two ends. In Gothic churches these project these project greatly, and should be called the arms of the transept. It is common, however, to speak of the arms themselves as the transepts.

e-lobed extremity or extremities, as a cross; also, more rarely, ornamented with trefoils projecting from the edges, as a bearing.

er, repeated at equal intervals. Each triglyph consists of a rectangular tablet, slightly projecting, and divided nearly to the top by two parallel and perpendicular gutters, or channels, called glyphs, into three parts, or spaces, called femora. A half channel, or glyph, is also cut upon each of the perpendicular edge…

A cam, wiper, or projecting piece which strikes another piece repeatedly.

A cylindrical projection on each side of a piece, whether gun, mortar, or howitzer, serving to support it on the cheeks of the carriage. See Illust. of Cannon.

A projecting member like a tenon, and serving the same or a similar purpose, but composed of several steps, or offsets. Thus, in the illustration, a is the tusk, and each of the several parts, or offsets, is called a tooth.

Having a projecting under jaw; prognathous. [Obs.] Holland.

A fold of the wall which projects into the cavity of the intestine in bivalve mollusks, certain annelids, starfishes, and some other animals.

A shade for the face, projecting from the bonnet. [Colloq. Eng.] C. Kingsley.

The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.

Having a conical or rounded projection or protuberance, like a boss.

The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; -- used in contradistinction from penumbra. See Penumbra.

In ancient armor, a visor, or projection like the peak of a cap, to which a face guard was sometimes attached. This was sometimes fixed, and sometimes moved freely upon the helmet and could be raised like the beaver. Called also umber, and umbril. [Obs.] But only vented up her umbriere. Spenser.

Having no hard and sharp projections, as spines, prickles, spurs, claws, etc.

Having the lower jaw projecting. T. Hughes.

Having the lower incisor teeth projecting beyond the upper ones, as in the bulldog.

One who undertakes; one who engages in any project or business. Beau. & Fl.