die of (something)
1. Literally, to die as a result of something. Is it true that Mr. Thomas died of lung cancer?
2. To be completely overcome by something. Everyone was dying of laughter during the comedian's performance. When my girlfriend dumped me, I thought I would die of a broken heart.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
die of somethingand die from something
to perish from an injury or a particular disease. The doctors did all they could, but he finally died of cancer. What did it die from?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.