The emphasis is not "to bore" or ´"to drill", but the resulting hole

Bohrloch n (zylindrischer Hohlraum im Gebirge, der durch Bohren hergestellt wird) / borehole, boring, hole |
(kleines) ~ / shot hole, borer hole, wormhole n |
~ (Masch) / bore n , borehole n

Bohrung f (Bergb, Erdöl) / borehole n, boring n, hold n | ...
~ (Innendurchmesser eines Arbeitszylinders) / bore n / ...
~ (Masch) / passage (of a valve), port, hole
(Kucera, Dictionary of Exact Science and Technology, German - English, 220.000 entries)

Precise Holes – no Trick but Know-How
It is generally known that plasma can be used not only for cutting long-run contours but also for cutting holes into all electrically conductive materials.
:
http://www.kjellberg.de/Plasma-Cutting/Processes/Cutting-app...

Techniques to improve small hole cut quality on carbon steel with a CNC Plasma systemPresented
:
inBest Practice to produce good plasma cut holes
:
http://www.metalwebnews.com/howto/plasma/presentation.pdf

ESAB Introduces Precision Hole Technology™ for Plasma Cutting Machines
New technology provides an integrated set of systems that improve hole cutting cylindricity while delivering the highest possible edge quality for precise hole cutting capability
http://www.prweb.com/releases/2011/4/prweb8355100.htm

The new True Hole technology for mild steel produces much better holes than what was previously possible with plasma. The above cut samples show ½ in thick mild steel cut with (left) and without the new technology. The pin fits perfectly in the True Hole sample because the hole is almost perfectly shaped. The hole cut without True Hole is wider at the top than at the bottom, causing the pin to fit poorly.
http://www.fabricatingandmetalworking.com/2010/01/new-plasma...

additional 277.00 Google links for "plasma cutting"&"hole"
http://www.google.de/search?q="plasma cutting" "hole"&hl=de&...

Some movies:
http://www.google.de/search?q="plasma cutting" "hole"&hl=de&...
(21.800 movies)