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