For many genealogists, a legal dictionary is a great help. This is especially true when analyzing court and probate records where legal terms may be used profusely. I picked up on on Ebay several years ago. A current in print one is not necessary and may be beyond your genealogy budget. Mine dates from the 1980s and serves my purpose well. In fact, I may pick up a few more from earlier time periods if I happen to spot one at an auction.