'bore-hole' definitions:

Definition of 'bore-hole'

(from WordNet)
noun
A hole or passage made by a drill; usually made for exploratory purposes [syn: bore, bore-hole, drill hole]

Definition of 'bore-hole'

From: GCIDE
  • bore-hole \bore-hole\ n. (mining) a hole or passage made by a drill, especially one made for exploratory purposes.
  • Syn: bore, drill hole. [WordNet 1.5]