CAWK, noun A name given by miners to certain specimens of the compact sulphate of baryte. These are of a white, gray or fawn color, often irregular in figure, but sometimes resembling a number of small convex lenses set in a ground. This name is sometimes given to masses composed of concentric lamellar concretions.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI