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