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