Where does this definition of once upon a time come from?
This entry for once upon a time is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is once upon a time a noun, verb, or something else?
In this entry, once upon a time is tagged as 2adv..
Does once upon a time appear elsewhere on Lughet?
Yes — once upon a time 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.