An especially clever, aggressive, or skillful attorney. I might be considered something of a legal beagle now, but I had to work for years to get enough experience to build my reputation.
legal-beagleand legal-eagle (ˈliglæˈbiglæ and ˈliglæˈiglæ)
n. a lawyer. I’ve got a legal-beagle who can get me out of this scrape.