Where does this definition of certified mail come from?
This entry for certified mail is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is certified mail a noun, verb, or something else?
In this entry, certified mail is tagged as noun.
Does certified mail appear elsewhere on Lughet?
Yes — certified mail 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.