Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To search for lodes.

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To search after lodes. See costeaning.

from The Century Dictionary and Cyclopedia

  • In mining, to endeavor to ascertain the position of a lode by sinking pits through the soil to the bed-rock.

Etymologies

Cornish cothas, dropped + stean, tin. (Wiktionary)

Examples

  • BRL has completed a successful trial quarrying and bauxite extraction costean programme of some 300 tonnes of bauxite for bulk sample for overseas customers.

    WA Business News - Latest News

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