1. A clue or piece of evidence that is deliberately concealed or not immediately apparent
The detective found a hidden clue in the suspect's notebook.
O detetive encontrou uma pista oculta no caderno do suspeito.
2. In games or puzzles, a hint or lead that requires investigation to uncover
The treasure hunt had hidden clues scattered throughout the garden.
A caça ao tesouro tinha pistas ocultas espalhadas por todo o jardim.