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a surname derived from David / a male given name of modern usage
Davy is a surname derived from David.
(mining) a safety lamp for use in flammable atmospheres, invented in 1815 by Sir Humphry Davy, to reduce the danger of explosions due to the presence of methane and other flammable gases; Davy lamp
The Davy lamp was invented in 1815 to reduce the danger of explosions in flammable atmospheres.
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