"start operating the courts in English" as opposed to legalese that only superficially looks like English but has completely different non-obvious meanings for words that ordinary people use all the time. . . . It is the legal system that perverts those meanings.
It's really sad to see someone say that technical legal terms are somehow bad. You want the law to be simple? Fine. If you do something some people think is bad, the state kills you. Simple. No need for extenuating circumstances like self-defense, accident, etc. Death penalty for everything.
Just like any other complex field (think computer technology or some other typical Slashdotter field), legal terms often have a lot of nuance. They need to - they describe non-simple concepts.
If you want the jury to get it right, come up with a list of commonly misunderstood (for the courtroom meaning) words and make sure to spend some time educating the jurors.
Despite what you may think from TV, they actually DO that - they are called "jury instructions," which define terms and explain how they fit together. If something has a meaning other than what a layperson thinks, it is the JOB of the attorneys and/or judge to explain that to the jury. That's the whole point of having a trial: to give the jury the information needed on which to base a decision. It's not perfect, but it's the best system we've come up with so far. Like the myriad proposed solutions for spam tend to ignore reality, most alternatives to the jury system fail to understand basic human nature.
I would be much more likely to try to look it up myself instead of asking the judge to explain it. For one thing, even the friendliest of judges is very intimidating, just because he is a judge and you are in his courtroom, whether you're the one on trial or not.
Looking up words on your own is a very bad idea. Would you want your technophobe relative setting up your own systems by reading articles on USAToday? Don't try to become the attorney or judge by looking up a term on "teh intrawebs."
IAAL, but not yours. Hopefully if you ever need one, you'll get a good one that does his/her job and makes sure the jury knows what it needs to give you justice (although if justice would be bad for you, I suppose my "hopes" wouldn't be yours *grin* ).