blacking


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Related to blacking: blacking out, Blacking up

blacking

[′blak·iŋ]
(metallurgy)
Carbonaceous material, such as powdered graphite, used to coat the inner surfaces of a dry-sand mold to improve the separation and finish of a casting.
References in classic literature ?
The poor, sickly little chap was set to work in a blacking factory.
On his proud and sensitive disposition this humiliation, though it lasted only a few months, inflicted a wound which never thoroughly healed; years after he was famous he would cross the street to avoid the smell from an altogether different blacking factory, with its reminder 'of what he once was.
Not blacking faces or sitting on hats, if you don't like those--but something of the sort.