Etymology

cauk

C3A1U1K5

Today it means: An opaque, earthy variety of barite, or heavy spar. Full definition →

Northern Middle English calke ← Anglian Old English calc
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The story

  1. Anglian Old English · inherited fromcalc
  2. Northern Middle English · inherited fromcalke
  3. English todaycauk

British dialect cauk (“limestone”), from Northern Middle English calke, from Anglian Old English calc; doublet of calx and chalk.

Etymology from Wiktionary, CC BY-SA 4.0.