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