A free program for Android, by Azklabs Mobile.

Law Dictionary Offline Pro is a dictionary application that lets you search for law terms without an internet connection. It’s easy to use and works offline, so if you’re on the go, you can still look up the definitions. It contains over 40,000 words and their definitions, so you won’t have to worry about running out of vocabulary. It has a simple and intuitive design, so you won’t have any trouble finding your way around the application.

You can add as many favorites as you want, so you can easily find the words you want to learn more about. It has a built-in translation function, so you can translate the words you don’t understand.