London smoke

Lon´don smoke


1.A neutral tint given to spectacles, shade glasses for optical instruments, etc., which reduces the intensity without materially changing the color of the transmitted light.
References in classic literature ?
The skipper has his wife on board," remarked another; and the light of the crimson sunset all ablaze behind the London smoke, throwing a glow of Bengal light upon the barque's spars, faded away from the Hope Reach.
My aunt was quite gracious on the subject of the Thames (it really did look very well with the sun upon it, though not like the sea before the cottage), but she could not relent towards the London smoke, which, she said, 'peppered everything'.
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