OK That is fine :) Thanks
I think it means that she won't be satisfied until she is with Romeo even though it is wrong and she it supposed to love Paris. The word dead shows her dead dream of being with romeo and her dead heart for not loving Paris, but romeo<span />
"Things only have meaning in context"
You can see this from the examples that Dickenson lists.
"Land by oceans past" - You would not be able to tell the land if there were no oceans
"Peace by its battles told" - How would we have a definition for peace without battles?