'Plumming' definitions:

Definition of 'Plumming'

From: GCIDE
  • Plumming \Plum"ming\, n. [See Plumb.] (Min.) The operation of finding, by means of a mine dial, the place where to sink an air shaft, or to bring an adit to the work, or to find which way the lode inclines. [1913 Webster]