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