concealedpiece
nounUK /kənˈsiːld piːs/
US /kənˈsiːld piːs/
A concealed piece is a part of something that is hidden so people cannot see it.
The puzzle had a concealed piece tucked under the table.
OTHER MEANINGS
2. A part of a game or puzzle that is kept out of sight until it is needed.
The board game came with a concealed piece that players reveal at the end.
3. A small object that is hidden away for safety.
She kept a concealed piece of jewelry in a locked drawer.
4. A hidden section of a picture or design.
The artist painted a concealed piece of the landscape behind the trees.