Black-lead
graphite; plumbago.
Historical Examples
The Book of Curiosities I. Platts
Tono Bungay H. G. Wells
Climbing in The British Isles. Vol. 1 – England W. P. Haskett Smith
The Boy’s Book of Heroes Helena Peake
The Story of a Tinder-box Charles Meymott Tidy
The Voyage of the Vega round Asia and Europe, Volume I and Volume II A.E. Nordenskieold
Letters from the Cape Lady Duff Gordon
Gardening for the Million Alfred Pink
Curiosities of Literature, Vol. II (of 3) Isaac Disraeli
Popular Technology; Volume 2 Edward Hazen
noun
another name for graphite
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an unlucky or tragic day.
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invisible infrared or ultraviolet light. Historical Examples The Brain Alexander Blade Legacy James H Schmitz noun the invisible electromagnetic radiation in the ultraviolet and infrared regions of the spectrum black light Invisible ultraviolet radiation. Black light causes certain fluorescent materials to emit visible light.
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a trap for insects that uses ultraviolet light as an attractant. Historical Examples Legacy James H Schmitz