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