"I think that many people's misunderstanding of the word directly results from successful spinning."
Ever since I first learned the meaning of impeachment (long, long before Clinton), people misunderstood its meaning. No spin needed.
While I agree that many always misunderstood the word, I also believe that clear and accurate reporting during the Clinton fiasco would've properly educated a certain percentage of the populace.
For the most part, in the MSM, that never happened.