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of mercury, which when struck, explodes with violence and a loud report. -- Detonating primer, a primer exploded by a fuse; -- used to explode gun cotton in blasting operations. -- Detonating tube, a strong tube of glass, usually graduated, closed at one end, and furnished with two wires passing through its sides at…

A kind of printing type, in size between Pica and Great Primer. See Type.

e of potassium, antimony, sulphide, etc, which readily ignites by friction. -- Friction primer, Friction tube, a tube used for firing cannon by means of the friction of a roughened wire in the friction powder or composition with which the tube is filled -- Friction wheel (Mach.), one of the wheels in frictional gearin…

, on which the alphabet, digits, and often the Lord's Prayer, were written or printed; a primer. "He teaches boys the hornbook." Shak.

A size of type between great primer and double pica. See the Note under Type.

To apply priming to, as a musket or a cannon; to apply a primer to, as a metallic cartridge.

veral varieties, as the white-, the red-, the yellow-flowered, etc. Formerly called also primerole, primerolles.

lock (Firearms), one in which the hammer rebounds to half cock after striking the cap or primer.

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

as, a primary school; a common school; a grammar school. As he sat in the school at his primer. Chaucer.

, perhaps, insignificant. The schoolmaster is abroad; and I trust to him, armed with his primer, against the soldier in full military array. Brougham.

A priming tube, or friction primer. See under Priming, and Friction.