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