pipeclay

pipe +‎ clay

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, James Joyce, An Encounter (in Dubliners)

     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, Capricornia, Chapter VII, p. 92,

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

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

   to pipeclay accounts