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That part of a gunlock which strikes the percussion cap, or firing pin; the cock; formerly, however, a piece of steel covering the pan of a flintlock musket and struck by the flint of the cock to ignite the priming.

In deep well boring, a device resembling two long chain links, for connecting a percussion drill to the rod or rope which works it, so that the drill is driven down by impact and is jerked loose when jammed.

rt or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc.

A musical istrument of percussion, consisting of bars yielding musical tones when struck. Knight.

chlock, for which several mechanical appliances (including the flintlock, and finally the percussion lock) were successively substituted. This arm has been generally superseded by the rifle.

rging a fluid, or for other purposes; as, the nipple of a nursing bottle; the nipple of a percussion lock, or that part on which the cap is put and through which the fire passes to the charge.

ne, or rubber, placed in contact with body to receive the blow, in examination by mediate percussion. [Written also plexometer.]

specifically, an instrument or device for priming; esp., a cap, tube, or water containing percussion powder or other capable for igniting a charge of gunpowder.

Capable of being struck or beaten; played by beating or by percussion; as, a tambourine is a pulsatile musical instrument.

Repercussion, or beating back; a quick and sudden resistance. The strong rebuff of some tumultuous cloud. Milton.

A tool used for applying a fresh percussion cap or primer to a cartridge shell in reloading it.

Return or repercussion, as of sound; echo. To hear the replication of your sounds. Shak.

ard, or the bodies of musical instruments. Pulmonary resonance (Med.), the sound heard on percussing over the lungs. -- Vocal resonance (Med.), the sound transmitted to the ear when auscultation is made while the patient is speaking.

A division of lines into short portions by a regular succession of arses and theses, or percussions and remissions of voice on words or syllables.

Having the percussion fulminate in a rim surrounding the base, distinguished from center-fire; -- said of cartridges; also, using rim-fire cartridges; as, a rim-fire gun. Such cartridges are now little used.

or a mortar or a cannon, and containing an explosive substance, ignited with a fuse or by percussion, by means of which the projectile is burst and its fragments scattered. See Bomb.

To form raised work upon the outer surface of (thin metal ware) by the repercussion of a snarling iron upon the inner surface.

of snarling. When one end is held in a vise, and the shank is struck with a hammer, the repercussion of the other end, or beak, within the article worked upon gives the requisite blow for producing raised work. See 1st Snarl.

oustic figures. -- Sonorous tumor (Med.), a tumor which emits a clear, resonant sound on percussion. -- So*no"rous*ly, adv. -- So*no"rous*ness, n.

er or urethra, with a sound; to examine with a sound; also, to examine by auscultation or percussion; as, to sound a patient.