hidden message
nounUK /ˈhɪd.ən ˈmes.ɪdʒ/
US /ˈhɪd.ən ˈmes.ɪdʒ/
A hidden message is a secret note that is hard to see or find.
The spy found a hidden message written in invisible ink.
OTHER MEANINGS
2. A meaning inside a story or picture that is not said openly.
The cartoon had a hidden message about being kind.
3. Words written so only certain people can read them.
They used a special pen to write a hidden message.
4. A clue tucked inside a game or puzzle.
Look closely at the map for a hidden message.