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keyhole |
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keyhole 1. an aperture in a door or a lock case through which a key may be passed to engage the lock mechanism 2. a transient column of vapour or plasma formed during the welding or cutting of materials, using high energy beams, such as lasers keyhole [′kē‚hōl] (design engineering) A hole or a slot for receiving a key. (metallurgy) A welding method wherein the heat source, because of its concentration, causes a hole through the surface immediately ahead of the molten weld metal in the direction of welding; the hole is filled as the welding progresses, ensuring complete joint penetration. (ordnance) Of a bullet, to strike a target after tumbling in flight so that the long axis of the bullet and the line of flight are not the same; usually caused by failure of the bullet to receive sufficient spin from the rifling in the barrel. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| So he sat at the feet of one awhile, and then he sat awhile at the feet of the other, and at last he applied his ear to the keyhole of the casket containing the Ashes of Madame Blavatsky. I was obliged to get her to repeat it, for she spoke it the first time quite down my throat, in consequence of my having forgotten to take my mouth away from the keyhole and put my ear there; and though her words tickled me a good deal, I didn't hear them. Having filled this instrument with a quantity of small coal-dust from the forge, she approached the door, and dropping on one knee before it, dexterously blew into the keyhole as much of these fine ashes as the lock would hold. |
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