be dying of something

be dying of (something)

1. To be nearing death as a result of something. This phrase can be used literally or figuratively. Is it true that Mr. Thomas is dying of lung cancer?
2. To be dying (figuratively) because one feels something so intensely. After my girlfriend dumped me, I thought I was dying of a broken heart.
See also: dying, of

be ˈdying of something

(informal) have a very strong feeling of something, for example hunger or boredom: We’re all dying of curiosity — come on, tell us what happened!I’m dying of thirst.
See also: dying, of, something