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