In a law library catalog, dictionaries can be found by conducting a subject search for "dictionaries." This can be narrowed to identify law dictionaries, medical dictionaries, etc., by adding these terms to your search (i.e., law dictionaries as your subject search).
Black's Law Dictionary 11th Edition, Deluxe Hardcover
by
Bryan A. Garner (Editor)
Prince's Bieber Dictionary of Legal Abbreviations, A Reference Guide for Attorneys, Legal Secretaries, Paralegals, and Law Students
by
Mary Miles Prince
Prince's Dictionary of Legal Citations: A Reference Guide for Attorneys, Legal Secretaries, Paralegals, and Law Students
by
Julia Roberts Furgerson & Mary Miles Prince
Legal encyclopedias are good starting points for the novice researcher or a researcher unfamiliar with an area of law, because they succinctly discuss and analyze legal doctrine, and cite to controlling statutes and/or leading cases. Legal encyclopedias give a researcher a broad overview of an area of law and familiarize him/her with that area's "terms of art."