This question is very difficult to answer directly. No one can know which words are unfamiliar to you-and it is very unlikely that everyone has the same versions of the plays. In fact, it is certain that many of us have different versions of the play, with different footnotes. Therefore, we can't know which words are already defined there.
That said, try the following.
Find words you don't know.
See if you can define them through context.
See if you can define them through looking at the modern translation of the entire passage.
Or, try using the electronic version of the play available via enotes. You can get definitions of the words you don't know by highlighting them and clicking "Shift-D."