pipeclay

pipe +‎ clay

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pipeclay (countable and uncountable, plural pipeclays)

1. catlinite

• pipestone

pipeclay (third-person singular simple present pipeclays, present participle pipeclaying, simple past and past participle pipeclayed)

1. (transitive) To whiten by application of pipeclay.
   • 1914 June, James Joyce, “An Encounter”, in Dubliners, London: Grant Richards, →OCLC:

     I sat up on the coping of the bridge admiring my frail canvas shoes which I had diligently pipeclayed overnight and watching the docile horses pulling a tramload of business people up the hill.

   • 1938, Xavier Herbert, chapter VII, in Capricornia‎, page 92:

     The walls were lined with paper-bark, pipe-clayed and panelled with polished bloodwood.

2. (transitive, slang, dated, UK) To clear off.

   to pipeclay accounts