臍

It is a phono-semantic compound, composed of:

肉 (⺼, “flesh”) as the semantic element;

齊 (je, “aligned, even”) as the phonetic element.

Together they denote the fleshy center of the body, the navel.

In modern Korean, 제 (臍) appears mostly in medical, anatomical, or literary contexts:

배꼽 (臍) – navel

제혈 (臍血) – umbilical cord blood

제대 (臍帶) – umbilical cord

제부 (臍部) – umbilical region (medical term)