Costeaning

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Costeaning \Cos"tean`ing\, n.
     The process by which miners seek to discover metallic lodes.
     It consist in 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, in such manner as
     to cross all the veins between the two pits.


     [1913 Webster]