No, a patent troll is a non-practicing entity (NPE). The specific reason they're dangerous is because they aren't subject to counter claims. You can't come along and redefine a word simply because you don't understand it.
The term is fairly new and as such the common definition is still changing, but Wikipedia agrees with regularfry
Patent troll is a pejorative term used for a person or company who enforces patents against one or more alleged infringers in a manner considered aggressive or opportunistic with no intention to manufacture or market the patented invention.*
