• Webster's Revised Unabridged Dictionary
    • n Éprouvette (Gun) An apparatus for testing or proving the strength of gunpowder.
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Century Dictionary and Cyclopedia
    • n eprouvette An apparatus for testing the explosive force of powders or other explosives. The most simple form is a pistol having the muzzle closed by a plate, which is maintained in position by a spring. When the pistol is fired, the tension of the spring is overcome and the plate is blown back, turning a ratchet-wheel which registers the force of the explosion.
    • n eprouvette A spoon used in assaying metals.
    • n eprouvette A short mortar.
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Chambers's Twentieth Century Dictionary
    • n Eprouvette ep-roov-et′ a machine for testing the strength of gunpowder.
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Webster's Revised Unabridged Dictionary
Chambers's Twentieth Century Dictionary
Fr.,—éprouver, to try.