American Heritage Dictionary
(3)
Century Dictionary
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Many people have laid down their lives for communism, and many have laid down their lives for capitalism.— Dan Dennett on dangerous memes
I don't know whether or not he's an actual card carrying commie, but he's definitely an America-hating, anti-capitalist Marxist leftist who thinks communism is the way to go.— Blog entry
Since the fall of communism, the Brussels-based NATO has had no real reason to exist.— Military Space News, Nuclear Weapons, Missile Defense
The elimination of the bourgeoisie as a class marks the transformation of socialism into early-stage communism, and ends the exploiting-by-ruling economic class struggle.— The Barefoot Bum

American Heritage Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a week.