Where does this definition of sight glass come from?
This entry for sight glass is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Does sight glass appear elsewhere on Lughet?
Yes — sight glass appears under other sources or language pairs in Lughet's collection. See the list below.
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.