secretpiece
nounUK /ˈsiː.krət.piːs/
US /ˈsiː.krət.piːs/
A secret piece is a small hidden part of something that you keep private.
She hid the secretpiece of the map inside her pocket.
OTHER MEANINGS
2. A special game token that players keep hidden from others.
He placed his secretpiece face down on the board.
3. A confidential part of a story or plan.
The last chapter revealed the secretpiece of the plan.
4. A small private keepsake.
The locket was a secretpiece she never showed anyone.