'Pipeclay' definitions:

Definition of 'pipeclay'

From: WordNet
noun
Fine white clay used in making tobacco pipes and pottery and in whitening leather [syn: pipeclay, terra alba]

Definition of 'Pipeclay'

From: GCIDE
  • Pipeclay \Pipe"clay`\, v. t.
  • 1. To whiten or clean with pipe clay, as a soldier's accouterments. [1913 Webster]
  • 2. To clear off; as, to pipeclay accounts. [Slang, Eng.] [1913 Webster]