I don't know if there is one, but we need our own version of Wiki...I'll start, and you all can add to it if you want.
Elder: A guy who has nothing better to do with his life when he's not being a janitor, middle management or a construction worker than pick on you so he can polish the WTS's apple.
Ministerial servant: Guy who wants to be an elder so he can pick on people, because he's tired of mostly just brown-nosing the elders.
Pioneer: Person who volunteers most of the time they should be out getting a better paying job harassing people with WTS literature so Jehovah will love them more and so that the rest of the congregation will want to be part of their spiritually elitest clique.
Temporary Pioneer: Someone who can't quite give enough time to be a pioneer because they have a mortgage, kids and a decent job, so they guilt themselves into playing pioneer once or twice a year so they can get one more step up in the Jehovah's Witnesses caste system.
Publisher: Low man on the spiritual totem pole who can barely make time to get ten hours a month because he wants to retire someday, but he does it anyway so that the elders won't come by and "encourage" him with a visit that involves making him feel like crap for not being a pioneer.
Fader: Someone who sneaks away from the WTS while the getting is good but does it in such a way that they may not have to experience shunning.
Disfellowshipped: Shunning, what the WTS does to people who dare to tell them where to get off or who quit believing or following their insane rules.
Disassociated: People who don't wait for the WTS to shun them before they tell them where to get off.
Elderette: Wife of a janitor who thinks she can assume the role of elder when her husband isn't doing what she tells him to do to encourage the flock...See:wifely submission.
Wifely submission: A myth perpetrated by Jehovah's Witnesses that makes men believe that their wives have to respect them even when they're being stupid or nasty, and largely ignored by many married female Witnesses who know better.
Three fold cord: Unfortunately not a description of a mildly kinky sexual act, but believing that Jehovah is the third party in your marriage..okay, maybe that IS a little kinky after all.