only child noun
plural only children
plural only children
Learner's definition of ONLY CHILD
[count]
: a person who never had a brother or sister独生子；独生女 -
I was an only child.我是独生子。
-
As an only child, it was her duty to take care of her aging parents.作为家里的独生女，她有义务赡养年迈的父母。