secretclasp
nounUK /ˈsiː.krət.klɑːsp/
US /ˈsiː.krət.klæsp/
A secret clasp is a hidden fastener that keeps something closed.
She opened the locket by pressing the tiny secretclasp on its side.
OTHER MEANINGS
2. A clasp whose opening mechanism is disguised so only the owner knows how it works.
The old diary had a secretclasp that looked like a decorative flower.
3. A small hidden hook that holds two parts of a piece of jewelry together.
The bracelet's secretclasp snapped shut with a quiet click.
4. A concealed fastening on a book, box, or bag that keeps it from opening by accident.
He found the secretclasp under the leather flap of the satchel.