The Shakespeare Dictionary, otherwise known as a lexicon, is a very handy tool. For one, I have had numerous teachers reach out to understand a word, or what context a word should be used in, or in what play it was found. So, in one shot, I am going to answer all of these questions, in various ways, depending on your mode of absorption.
Shakespeare Dictionary BOOKS
First of all, the easiest for your bookshelf is to find a Shakespeare Dictionary and purchase one. Here are a couple I have used in the past, with some quick notes: