Sunday's term was best evidence rule, which is defined as:
n. the legal doctrine that an original piece of evidence, particularly a document, is superior to a copy. If the original is available, a copy will not be allowed as evidence in a trial. See also: evidence.
This term garnered all sorts of interesting discussion, and all of those who guessed got it right (and then some)!
Today's term is:
As always, no dictionaries, please.