little sib

Noun

A sibling's younger sibling (used especially by children or by parents in speaking to their children).

Japanese Meaning

家族の中で年が下の兄弟、つまり弟または妹のこと。子どもや親が子どもに対して使う表現。

年下のきょうだいが学校のバザーのためにクッキーを焼きたがったので、私は小麦粉の量り方を教えました。

Sense（1）

A sibling's younger sibling (used especially by children or by parents in speaking to their children).

When your friends throw you a surprise party, they invite your family too, including your little sibs.

little sibs

（ plural ）