Correct

头生

/ tóu shēng /
Strokes

Example

As a Verb

(of a woman) give birth for the first time

1
zhè
shì
tóushēng
头生

This is her first time to give birth to a child. / This is her first delivery.

As an Adjective

firstborn

2
Tóushēng
头生
de
háizi
孩子

firstborn child

As a Noun

firstborn child/baby; firstborn