C'mon; let's have a more up-to-date definition, suitable for softlinking to.

My Webster 1979 defines "vitriol" as

sharpness or bitterness of feeling, as in speech or writing; venom

Let's see. Use "vitriol" in a sentence. How about:

I can't believe the number of writeups I've seen here on E2, composed of nothing but vitriol.