safety-lamp

safety lamp

noun
a miner's lamp in which the flame is protected by wire gauze to prevent the immediate ignition of explosive gases.

Origin:
1810–20

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World English Dictionary
safety lamp
 
n
Also called: Davy lamp an oil-burning miner's lamp in which the flame is surrounded by a metal gauze to prevent it from igniting combustible gas

Collins English Dictionary - Complete & Unabridged 10th Edition
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