Where does this definition of signal flag come from?
This entry for signal flag is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is signal flag a noun, verb, or something else?
In this entry, signal flag is tagged as 2n..
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.