末っ子

彼(かれ)は末っ子だ。

He is the baby of the family.

私(わたし)は末っ子です。

I'm the youngest in the family.

スティーブ、あなたは末っ子なんだってね。

Steve, I heard you were the baby of the family.

両親は、末っ子をえこひいきするかもしれない。

Parents may favor the youngest child in the family.