concealedmessage
nounUK /kənˈsiːld ˈmɛsɪdʒ/
US /kənˈsiːld ˈmɛsɪdʒ/
A concealed message is a secret note that is hidden so only certain people can find it.
The spy left a concealed message under the park bench for his friend to find.
OTHER MEANINGS
2. A message written in invisible ink that appears only when treated.
She wrote a concealed message with lemon juice that showed up when held near a lamp.
3. A message hidden inside a picture or object, such as a puzzle.
The treasure map had a concealed message drawn into the trees.
4. A secret meaning understood only by people who know the code.
The song's lyrics carried a concealed message for the listeners who knew the key.