PIPECLAY
pipeclay, terra alba
(noun) fine white clay used in making tobacco pipes and pottery and in whitening leather
Source: WordNet® 3.1
Etymology
Noun
pipeclay (countable and uncountable, plural pipeclays)
catlinite
Synonyms
• pipestone
Verb
pipeclay (third-person singular simple present pipeclays, present participle pipeclaying, simple past and past participle pipeclayed)
(transitive) To whiten by application of pipeclay.
(transitive, slang, dated, UK) To clear off.
to pipeclay accounts
Source: Wiktionary
Pipe"clay`, v. t.
1. To whiten or clean with pipe clay, as a soldier's accouterments.
2. To clear off; as, to pipeclay accounts. [Slang, Eng.]
Source: Webster’s Unabridged Dictionary 1913 Edition