costean

noun, verb — 2 senses

costean

noun

Etymology Presumably from Cornish kodha (“to fall, happen”) + sten (“tin”).

Business, Mining A trench in solid rock intersected by pits which reveals mineral veins.

costean

verb

Etymology Presumably from Cornish kodha (“to fall, happen”) + sten (“tin”).

Business, Mining To search for lodes by sinking small pits through the superficial deposits to the solid rock, and then driving from one pit to another across the direction of the vein, so as to cross all the veins between the two pits.

Related terms: costeaning

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.