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urchin. -- Needle spar (Min.), aragonite. -- Needle telegraph, a telegraph in which the signals are given by the deflections of a magnetic needle to the right or to the left of a certain position. -- Sea needle (Zoöl.), the garfish.

ward motion of the head, in assent, in familiar salutation, in drowsiness, or in giving a signal, or a command. A look or a nod only ought to correct them [the children] when they do amiss. Locke. Nations obey my word and wait my nod. Prior. The land of Nod, sleep.

of hunger, cold, etc. I. Watts. Notion, again, signifies either the act of apprehending, signalizing, that is, the remarking or taking note of, the various notes, marks, or characters of an object which its qualities afford, or the result of that act. Sir W. Hamilton.

From the shore; as, an offshore wind; an offshore signal.

tormed in vain. Dryden. To beat a parley (Mil.), to beat a drum, or sound a trumpet, as a signal for holding a conference with the enemy.

The art or science which treats of lighthouses and signal lights.

as a pilot to the shark. (b) The rudder fish (Seriola zonata). -- Pilot jack, a flag or signal hoisted by a vessel for a pilot. -- Pilot jacket, a pea jacket. -- Pilot nut (Bridge Building), a conical nut applied temporarily to the threaded end of a pin, to protect the thread and guide the pin when it is driven int…

To call, convey orders, etc., by means of signals on a pipe or whistle carried by a boatswain.

Of or pertaining to precaution, or precautions; as, precautionary signals.

A petty officer who attends to the helm, binnacle, signals, and the like, under the direction of the master. Totten. Quartermaster general (Mil.), in the United States a staff officer, who has the rank of brigadier general and is the chief officer in the quartermaster's department; in England, an officer of high rank s…

ved). To repeat one's self, to do or say what one has already done or said. -- To repeat signals, to make the same signals again; specifically, to communicate, by repeating them, the signals shown at headquarters.

Figuratively, to do something in return for something done; as, to reply to a signal; to reply to the fire of a battery.

A signal given in the army or navy, by the beat of a drum or the sounding of trumpet or bugle, at sunset (when the roll is called), or for retiring from action.

he bells backward, to sound the chimes, reversing the common order; -- formerly done as a signal of alarm or danger. Sir W. Scott.

combustion of the composition. Rockets are used as projectiles for various purposes, for signals, and also for pyrotechnic display.

e; duty; rôle. [Obs.] L'Estrange. Long roll (Mil.), a prolonged roll of the drums, as the signal of an attack by the enemy, and for the troops to arrange themselves in line. -- Master of the rolls. See under Master. -- Roll call, the act, or the time, of calling over a list names, as among soldiers. -- Rolls of cour…

A signal telegraph; an apparatus for giving signals by the disposition of lanterns, flags, oscillating arms, etc.

An instrument for signaling by reflecting the rays of the sun in different directions. Knight.

ication of the signs or symptoms of disease; a semeiological arrangement of signs used as signals.

The art of using signs in signaling.