bore·hole 
(bôrhōl′)
(bôrhōl′)n.
A hole that is drilled into the earth, as in exploratory well drilling or in building construction.
- astrometric
- astrometrical
- astrometric binary
- astrometry
- astronaut
- astronautic
- astronautical
- right of asylum
- right off
- right off the bat
- right of search
- right of way
- right-of-way
- right on
- right-on
- right-out
- right-side up
- rightsize
- right smart
- right stuff
- right to choose
- right to die
- right-to-die
- right to know
- right-to-know