Quote Originally Posted by mekko
Like "Sergei bodet боевик?" = Sergei is a fighter?
There's no such word "bodet". I even can't a hazard guess about what do you mean.

mb. будет - future form of the verb быть (to be)?

Like I said, the meaning of the word боевик strongly depends on the context. I varies from a movie genre to a terrorist.

Generally word боевик is connected with the concept of combat and everything related to it. Even in case of a movie the word means there's a lot of shooting, killing and/or fighting in it.