Where does this definition of under separate cover come from?
This entry for under separate cover is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is under separate cover a noun, verb, or something else?
In this entry, under separate cover is tagged as 2adv..
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.