Certain earring

HOOP

["This circular piece of jewelry wraps around the ear lobe."]

The clue "Certain earring" points to "HOOP" because a hoop earring is a specific type of earring shaped like a circular ring. The word "certain" hints that it's not just any earring but a particular style, and "hoop" is the straightforward term for that style. There’s no hidden wordplay here—it’s a direct reference to a well-known jewelry item.