Where does this definition of problem board come from?
This entry for problem board is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does problem board appear elsewhere on Lughet?
Yes — problem board appears under other sources or language pairs in Lughet's collection. See the list below.
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.