downhole: Meaning and Definition of

down•hole

Pronunciation: (doun'hōl"), [key]
— n.
  1. a hole dug or drilled downward, as in a mine or a petroleum or gas well.
—adj.
  1. occurring or situated in such a hole.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.