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