expression, noun
one's own child; one's own children
Refers to one's own child or children, often with emotional warmth or parental perspective.
我が子の成長を見るのは嬉しい。
It's a joy to watch one's own child grow.
彼女は我が子のように生徒を大切にしている。
She cares for her students as if they were her own children.