pipeclay verb 2noun 1forms 3 verb2 •To whiten by application of pipeclay.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. — 1904 •(slang, old-fashioned) To clear off.to pipeclay accounts noun1 •Catlinite formspipeclayed · pipeclaying · pipeclays
