Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
pipeclay is a noun meaning "fine white clay used in making tobacco pipes and pottery and in whitening leather". It carries one recorded sense.
fine white clay used in making tobacco pipes and pottery and in whitening leather
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for pipeclay come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.