If you haven't a clue about something, you do not know anything about it or you have no idea what to do about it. I haven't a clue what I'll give Carl for his birthday next year. the US name for the game Cluedo. clue in to give someone information about something clue somebody⇔in on/about
A question or hint that the solver uses to work out the Answer It usually consists of the number of the Light, followed by the text of the clue, then the Enumeration Clues commonly consist of just a Definition or are Cryptic
A clue to a problem or mystery is something that helps you to find the answer to it. Geneticists in Canada have discovered a clue to the puzzle of why our cells get old and die