Please have the sense to check to see if your questions have previously been answered. Both this question and your other question above have been answered a few questions below.
I think the answer you want is probably LECTOR, but as you do not give the number of letters it is difficult to be certain.
If you post the name of the crossword, the full clue, number of letters in the answer and any letters you have placed, you will find that lots of people will try to help you.