percuss i oner (perk us honer)

In gun- mak ing, the workman who fits the nipple and other connected parts. W. W. Greener, The Gun, p. 251. percu ion-fuse (pér-kush'on-füz), n. A detonating fuse so constructed that, when impact suddenly checks the motion of the projectile, the firing-mechanism of the fuse is set free to act upon the detonating substance. In the cut, a is the shell. The plunger h is held by a detent o, which engages a notch at the rear end with a force graduated to permit its release by the shock of impact, when the plunger is driven forward to strike and ex Bacon , Nat. Hist., § 190.