/?b??θ ?m?e.?/the woman who gavebirthto achild,althoughshe may not now be the child'slegalmother生母SMART Vocabulary: related words and phrasesFamily: relations in general
anti-family
aunt
auntie
baby daddy
biologically
fatherhood
filial
first cousin
fraternal
grand-nephew
kinsman
kinswoman
kith and kin
long-lost
loved one
relative
removed
second cousin
sib
sibling
See more results ?(Definition ofbirth motherfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/birth-mother##