I used to think Devil's Advocate meant the defense lawyer, though it actually means someone who, given a certain argument, takes a position they do not necessarily agree with, for the sake of debate. My question is, does an idiomatic phrase, or euphemism exist, meaning 'Defense Lawyer'?
I am not aware of any word or phrase for "defense lawyer" other than: (a) "defense lawyer"; (b) "my lawyer", when you're the defendant; and (c) "the defense", when discussed from the viewpoint of the judge and jury. A judge will say "the defense has presented a motion to ...", but the defendant doesn't refer to his own lawyer as "the defense".
RE FumbleFingers answer, I suspect "my brief" is a British term. I have never heard it used in the U.S. In U.S. legal jargon, a "brief" is a paper that a lawyer or other interested party gives to the judge summarizing his legal argument. Maybe there's a relation between the two usages.