Where does this definition of brown coal come from?
This entry for brown coal is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is brown coal a noun, verb, or something else?
In this entry, brown coal 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.