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