Wow. I couldn't find anything either. Then again, I first learned about it in an economics book in the 90s ... and I think that book was from the 70s.

Price bashing is when a competitor lowers prices to the point where they are losing money on the transaction. The desired effect is to destroy the competition and once the competition is eliminated, to raise prices to an artificially high level as a monopolist.

EDIT: Found it - http://en.wikipedia.org/wiki/Predatory_pricing