pipeclay Meaning, Definition & Usage

  1. noun fine white clay used in making tobacco pipes and pottery and in whitening leather
    terra alba.

WordNet

Pipe"clay` transitive verb
Definitions
  1. To whiten or clean with pipe clay, as a soldier's accouterments.
  2. To clear off; as, to pipeclay accounts. Slang, Eng.

Webster 1913