Where does this definition of heart trouble come from?
This entry for heart trouble is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is heart trouble a noun, verb, or something else?
In this entry, heart trouble is tagged as 2n..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.